{"version":"2.7.0","id":"player-david-ernstam-1NNG6N","type":"player","rules_and_decisions":[{"id":"who-is-player","category":"Overview","question":"Who is david ernstam?","title":"david ernstam Profile & Background","excerpt":"david ernstam is an active pickleball player registered under DUPR ID 1NNG6N.","answer":"david ernstam is an active pickleball player registered in the Pickle Gravity database with DUPR ID 1NNG6N. They reside and play matches in Yuba City, CA, US.","answer_detail":"Our database matches GPN network rosters to track player involvement across local districts. david ernstam maintains active doubles and singles rating metrics, indicating their level of play and performance in regional matches.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","profile","overview"]},{"id":"dupr-id","category":"Registry","question":"What is david ernstam's DUPR ID?","title":"david ernstam DUPR Identification Key","excerpt":"The unique DUPR identification key for david ernstam is 1NNG6N.","answer":"Their unique DUPR ID is 1NNG6N. This identification key is used globally to verify match results and update player standing rankings.","answer_detail":"Every match outcome submitted by leagues or clubs references this ID to ensure ratings are updated accurately. Keep this ID handy when registering for tournaments or DUPR-sanctioned events.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","dupr","id"]},{"id":"last-verified","category":"Registry","question":"When was david ernstam's record last updated?","title":"david ernstam Profile Last Verified Date","excerpt":"Last verified on 2026-04-17.","answer":"Their DUPR rating and career stats were last verified on 2026-04-17.","answer_detail":"Player stats are synchronized weekly with external indexes. Any new matches recorded since the verification date will be calculated in the next sync.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","metadata","verification"]},{"id":"gender-status","category":"Registry","question":"Is david ernstam registered as male or female?","title":"david ernstam Gender Classification","excerpt":"Registered gender is {{gender}}.","answer":"Their gender is recorded as {{gender}} in the DUPR database.","answer_detail":"Gender classifications are used to bracket mixed doubles and single-gender ladders correctly. This coordinates competitive alignment in GPN fixtures.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","gender","registry"]},{"id":"age-bracket","category":"Registry","question":"What is david ernstam's age bracket?","title":"david ernstam Age Bracket Classification","excerpt":"Recorded as 62 years old (Birth Year: 1964).","answer":"They compete in the age bracket corresponding to 62 years old (born around 1964).","answer_detail":"Age groups divide players into Junior, Adult (19+), or Senior (50+) classes. This ensures fair competition matching physical capabilities.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","age","profile"]},{"id":"rating-half-life","category":"Registry","question":"What is david ernstam's DUPR rating half-life?","title":"david ernstam DUPR Rating Half-Life","excerpt":"Their rating half-life is 2 days.","answer":"Their DUPR rating half-life sits at 2 days, representing rating decay rates.","answer_detail":"Rating half-life measures how fast old match outcomes lose their weight in calculations. A lower half-life adjusts to current performance faster.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","dupr","half-life"]},{"id":"gpn-associations","category":"Registry","question":"What GPN networks is david ernstam associated with?","title":"david ernstam GPN Networks","excerpt":"Associated with networks around Yuba City, CA, US.","answer":"They play in leagues and networks located around Yuba City, CA, US. Rosters can be found on GPN.","answer_detail":"Network associations link players to specific regional ladders. Matches played within these networks automatically update standings.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","gpn","networks"]},{"id":"rating-stability","category":"Registry","question":"How stable is david ernstam's DUPR rating?","title":"david ernstam DUPR Rating Stability","excerpt":"Stability is determined by a half-life of 2 days.","answer":"With a rating half-life of 2 days, their rating shows high/medium stability based on recency.","answer_detail":"Active play prevents rating drift. Playing matches regularly ensures the rating remains reflective of current competitive form.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","dupr","stability"]},{"id":"request-correction","category":"Registry","question":"How can I request a correction of david ernstam's player details?","title":"Request Player Profile Correction","excerpt":"Corrections sync weekly from GPN and DUPR registry inputs.","answer":"Player profiles sync weekly. If details are outdated, submit corrections on GPN or DUPR first.","answer_detail":"Once updated on the official source directories, our weekly crawl sweeps the update into the SQLite database automatically.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","correction","support"]},{"id":"is-active","category":"Registry","question":"Is david ernstam currently active in the database?","title":"david ernstam Database Activity Status","excerpt":"Last synced and verified active in Yuba City, CA, US.","answer":"Yes, they are indexed as active with records verified on 2026-04-17.","answer_detail":"Active status is maintained if the player has registered matches or rating updates within our tracking window.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","status","registry"]},{"id":"doubles-rating","category":"Performance","question":"What is david ernstam's doubles DUPR rating?","title":"david ernstam Doubles DUPR Rating","excerpt":"Doubles DUPR: 4.027 (Reliability: 29%).","answer":"Their doubles DUPR rating is 4.027 with a reliability factor of 29%.","answer_detail":"Doubles DUPR ratings adjust dynamically based on match outcomes. Reliability values above 50% indicate a robust history of recent play.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","doubles","rating"]},{"id":"singles-rating","category":"Performance","question":"What is david ernstam's singles DUPR rating?","title":"david ernstam Singles DUPR Rating","excerpt":"Singles DUPR: 4.095 (Reliability: 97%).","answer":"Their singles DUPR rating is 4.095 with a reliability factor of 97%.","answer_detail":"Singles play requires speed and court coverage. A rating of 4.095 reflects their performance in verified singles matchups.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","singles","rating"]},{"id":"win-rate-percentage","category":"Performance","question":"What is david ernstam's match win rate percentage?","title":"david ernstam Career Win Rate","excerpt":"Their overall win rate is 58.2%.","answer":"They maintain a career win rate of 58.2% across doubles and singles matches in our directory.","answer_detail":"In balanced Elo/DUPR systems, win rates cluster between 45% and 55%. Outliers exceeding 60% indicate rapid skill climbing.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","win-rate","performance"]},{"id":"points-won-percentage","category":"Performance","question":"What is the average points won percentage for david ernstam?","title":"david ernstam Points Won Percentage","excerpt":"On average, they win 52.8% of points per match set.","answer":"On average, they win 52.8% of points in their tracked matches.","answer_detail":"Points won percentage tracks micro-efficiency. Standardizing points shows performance quality even in match sets that result in close losses.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","points","metrics"]},{"id":"rating-tier","category":"Performance","question":"How does david ernstam's rating compare to average players?","title":"david ernstam DUPR Percentile Tier","excerpt":"Ranks in the 4.027 range tier.","answer":"With a doubles DUPR of 4.027, they perform in the upper/mid bracket of community players.","answer_detail":"Recreation averages sit around 3.20 - 3.50. Ratings above 4.00 represent competitive tournament-level play with advanced kitchen and dink skills.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","percentile","tier"]},{"id":"singles-vs-doubles","category":"Performance","question":"Does david ernstam focus more on singles or doubles?","title":"david ernstam Game Type Focus","excerpt":"Doubles reliability: 29% | Singles reliability: 97%.","answer":"Based on rating reliability, they have a doubles focus (29%) vs singles focus (97%).","answer_detail":"Doubles matches are far more frequent in local pickleball clubs. Higher reliability in doubles indicates a focus on partner-based league play.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","focus","game-type"]},{"id":"singles-reliability","category":"Performance","question":"What is the reliability of david ernstam's singles rating?","title":"david ernstam Singles Reliability","excerpt":"Singles reliability is 97%.","answer":"Their singles rating reliability is 97%, showing match log density.","answer_detail":"Reliability scales with match frequency and recency. A low reliability suggests they have not logged recent singles matches.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","singles","reliability"]},{"id":"doubles-reliability","category":"Performance","question":"What is the reliability of david ernstam's doubles rating?","title":"david ernstam Doubles Reliability","excerpt":"Doubles reliability is 29%.","answer":"Their doubles rating reliability is 29%, showing high confidence in their rating.","answer_detail":"A higher reliability factor (above 50%) indicates that their rating is supported by numerous recent tournament and league results.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","doubles","reliability"]},{"id":"optimal-matchups","category":"Performance","question":"What constitute optimal matchups for david ernstam?","title":"david ernstam Optimal Matchup Analysis","excerpt":"Optimized for matchups matching their chemistry profile.","answer":"They perform best in matchups where opponent ratings align closely with their own doubles rating of 4.027.","answer_detail":"Balanced matchups prevent excessive rating volatility. Games played against teams within a 0.25 rating margin are ideal.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","matchups","performance"]},{"id":"matchmaking-tier","category":"Performance","question":"What is the recommended matchmaking range for david ernstam?","title":"david ernstam Matchmaking Bracket","excerpt":"Recommended DUPR range: 4.027 +/- 0.25.","answer":"We recommend matching them with partners and opponents between DUPR rating brackets of 4.027 +/- 0.25.","answer_detail":"Staying within this 0.50 DUPR band ensures games are competitive and tactical rather than one-sided.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","matchmaking","bracket"]},{"id":"performance-trend","category":"Performance","question":"What is david ernstam's recent performance trend?","title":"david ernstam Recent Match Trends","excerpt":"Calculated from recent match win-loss trends.","answer":"Recent matches show a stable trend with a total of 158 matches tracked.","answer_detail":"Roster updates track career trajectory. Analyzing recent wins and losses helps identify if the player is currently peak-performing.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","trends","performance"]},{"id":"dpg-strokes-gained","category":"Performance","question":"What is david ernstam's DUPR Points Gained (DPG) score?","title":"david ernstam DUPR Points Gained Score","excerpt":"A micro-efficiency metric evaluating points contribution per set.","answer":"Their DUPR Points Gained (DPG) score evaluates their net points contribution relative to partner DUPR averages.","answer_detail":"DPG acts similarly to Strokes Gained in golf, isolating the player's direct impact on match sets.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","dpg","metrics"]},{"id":"clutch-index","category":"Performance","question":"What is david ernstam's Clutch Performance Index (CPI)?","title":"david ernstam Clutch Performance Index","excerpt":"CPI measures performance in tight point spreads.","answer":"Their CPI measures success rate in matches resolved by a margin of 2 points (e.g. 11-9 or 15-13).","answer_detail":"A high Clutch Performance Index indicates mental resilience and tactical execution under pressure.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","cpi","clutch"]},{"id":"strength-of-schedule","category":"Performance","question":"What is david ernstam's Strength of Schedule (SoS)?","title":"david ernstam Strength of Schedule","excerpt":"Average opponent rating: 4.11 DUPR.","answer":"Their Strength of Schedule rating is calculated from their opponents' average DUPR of 4.11.","answer_detail":"A higher SoS means the player consistently faces advanced competition, which justifies rating adjustments even in close loss scenarios.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","sos","competition"]},{"id":"match-play-intensity","category":"Performance","question":"What is the match play intensity level for david ernstam?","title":"david ernstam Match Intensity Level","excerpt":"Evaluated from opponent ratings average 4.11.","answer":"They play high-intensity matches based on an opponent DUPR average of 4.11.","answer_detail":"Matches against opponents within similar rating bands require high focus and result in longer rally lengths.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","intensity","performance"]},{"id":"rating-percentile-rank","category":"Performance","question":"What is david ernstam's estimated percentile rank?","title":"david ernstam Percentile Ranking","excerpt":"Estimated based on doubles DUPR of 4.027.","answer":"Based on 4.027 doubles DUPR, they sit in the competitive percentile among registered regional players.","answer_detail":"Percentiles are recalculated weekly as new ratings are committed to the GPN databases.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","percentile","rank"]},{"id":"unforced-error-ratio","category":"Performance","question":"What is david ernstam's unforced error ratio?","title":"david ernstam Unforced Errors","excerpt":"Estimated from control and dinking accuracy metrics.","answer":"Their unforced error ratio is estimated based on their playstyle control score.","answer_detail":"Unforced errors determine success in long kitchen rallies. A lower ratio suggests high dinking discipline.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","errors","control"]},{"id":"shot-making-efficiency","category":"Performance","question":"How efficient is david ernstam's shot-making?","title":"david ernstam Shot Efficiency","excerpt":"Scored based on power and spin ratings.","answer":"Their shot-making efficiency integrates drive power and spin variations.","answer_detail":"High shot efficiency converts defensive situations into offensive resets near the non-volley zone.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","shot","efficiency"]},{"id":"defensive-reset-percentage","category":"Performance","question":"What is david ernstam's defensive reset percentage?","title":"david ernstam Defensive Resets","excerpt":"Determined from their Control metric score of 84%.","answer":"Their defensive reset percentage aligns with a Control metric score of 84%.","answer_detail":"Resetting fast speeds into soft dinks halts baseline aggressive attacks from opponents.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","defense","control"]},{"id":"serve-velocity-estimate","category":"Performance","question":"What is the serve velocity estimate for david ernstam?","title":"david ernstam Serve Velocity","excerpt":"Aligned with their Power metric score of 89%.","answer":"Their serve velocity is estimated based on their Power metric score of 89%.","answer_detail":"Serves must focus on depth and spin. Higher power allows players to force deeper return errors from opponents.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","serve","power"]},{"id":"total-matches","category":"History","question":"How many matches has david ernstam played?","title":"david ernstam Career Match Count","excerpt":"They have played a total of 158 matches in our index.","answer":"In our database, david ernstam has played a total of 158 matches.","answer_detail":"This count represents competitive and recreational matches synced from GPN and DUPR. A larger history indicates stable ratings.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","matches","history"]},{"id":"match-record","category":"History","question":"What is david ernstam's career record (Wins / Losses)?","title":"david ernstam Win-Loss Record","excerpt":"Record: 92 Wins and 66 Losses.","answer":"Their career record stands at 92 Wins and 66 Losses in our directory.","answer_detail":"Wins and losses are aggregated from matches submitted to active tournament databases.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","record","wins","losses"]},{"id":"weekly-streak","category":"Activity","question":"What is david ernstam's weekly play streak?","title":"david ernstam Weekly Playing Streak","excerpt":"Current streak: 0 weeks | Max: 1 weeks.","answer":"They have played matches for 0 consecutive weeks. Their all-time maximum is 1 weeks.","answer_detail":"Activity streaks are compiled from GPN matches, indicating active roster involvement.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","streak","activity"]},{"id":"active-days","category":"Activity","question":"How many days has david ernstam played in the last 18 weeks?","title":"david ernstam Recent Active Days","excerpt":"Logged active matches on 39 days in the last 18 weeks.","answer":"They have active match logs on 39 separate days in the last 18 weeks.","answer_detail":"Regular weekly playing helps maintain rating accuracy and ensures rating reliability values do not decay.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","activity","frequency"]},{"id":"preferred-court","category":"Activity","question":"Where is david ernstam's preferred home court facility?","title":"david ernstam Preferred Home Court","excerpt":"Most active facility: Sacramento, CA.","answer":"Their most frequented facility for matches is Sacramento, CA.","answer_detail":"Preferred courts are computed based on location coordinates linked to historical matches in our SQLite index.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","court","preferred"]},{"id":"preferred-court-surface","category":"Activity","question":"What court surface does david ernstam play on most?","title":"david ernstam Preferred Surface Type","excerpt":"Plays primarily on surfaces at Sacramento, CA.","answer":"They play primarily on the court surfaces at Sacramento, CA.","answer_detail":"Surface materials affect spin and ball heights. Hard acrylic surfaces are common in regional complexes.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","surface","court"]},{"id":"indoor-outdoor-focus","category":"Activity","question":"Does david ernstam play indoor or outdoor matches more?","title":"david ernstam Environmental Focus","excerpt":"Determined from home court settings at Sacramento, CA.","answer":"Their match logs are centered around Sacramento, CA, matching its environmental configuration.","answer_detail":"Outdoor courts introduce wind factors, making topspin essential. Indoor environments offer zero wind for fast drives.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","environment","court"]},{"id":"upcoming-leagues","category":"Activity","question":"Is david ernstam registered for upcoming GPN leagues?","title":"david ernstam League Registrations","excerpt":"Registration details can be queried on GPN networks.","answer":"Yes, they coordinate matches within local networks. Check GPN boards for schedules.","answer_detail":"Roster status updates dynamically as league coordinators schedule upcoming ladder matches.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","leagues","gpn"]},{"id":"high-win-streak","category":"History","question":"What is the longest playing streak for david ernstam?","title":"david ernstam Maximum Play Streak","excerpt":"Their personal best maximum playing streak is 1 weeks.","answer":"Their career longest playing streak reaches 1 weeks on GPN.","answer_detail":"Streaks measure long-term commitment to active ladders and play schedules.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","streak","history"]},{"id":"career-match-milestones","category":"History","question":"Has david ernstam reached significant match milestones?","title":"david ernstam Match Milestones","excerpt":"Completed 158 matches in our index.","answer":"They have reached a career milestone of 158 total matches in our index.","answer_detail":"Milestones trace player maturity. Accumulating more than 50 matches yields high confidence in rating indicators.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","milestones","history"]},{"id":"opponent-rating-distribution","category":"History","question":"What is the rating distribution of david ernstam's opponents?","title":"david ernstam Opponent Rating Distribution","excerpt":"Average opponent rating rests at 4.11.","answer":"Their opponent rating distribution averages around 4.11 DUPR.","answer_detail":"Playing opponents with diverse DUPR values gives a robust, well-rounded rating evaluation.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","opponents","history"]},{"id":"partner-rating-distribution","category":"History","question":"What is the rating distribution of david ernstam's partners?","title":"david ernstam Partner Rating Distribution","excerpt":"Average partner rating rests at 4.18.","answer":"Their doubles partners maintain an average rating of 4.18 DUPR.","answer_detail":"Partner rating consistency helps ensure balanced team dynamics in doubles leagues.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","partners","history"]},{"id":"historical-record-growth","category":"History","question":"How has david ernstam's match count grown over time?","title":"david ernstam Match Count Growth","excerpt":"Currently tracks 158 career matches.","answer":"Their match count has grown to 158 matches since registration.","answer_detail":"Accumulating matches weekly stabilizes Elo indicators, preventing sharp rating changes after individual sets.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","growth","history"]},{"id":"clutch-match-history","category":"History","question":"Does david ernstam have a history of winning close matches?","title":"david ernstam Close Match History","excerpt":"Evaluated through points percentage metrics.","answer":"They show consistency in close match sets, winning 92 sets overall in our index.","answer_detail":"Winning close matches (e.g. 11-9) is a key differentiator for competitive players in ladders.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","clutch","history"]},{"id":"first-recorded-match","category":"History","question":"When was david ernstam's first match recorded in the index?","title":"david ernstam First Recorded Match","excerpt":"Calculated from historical match logs.","answer":"Their match logs stretch back to early registration periods with 158 total games compiled.","answer_detail":"A long historical match log allows players to evaluate their skill development over seasons.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","first-match","history"]},{"id":"gpn-active-status","category":"Activity","question":"How active is david ernstam on global ladders?","title":"david ernstam Global Ladder Activity","excerpt":"Currently has a weekly streak of 0 weeks.","answer":"They maintain an active profile on global networks with a weekly playing streak of 0 weeks.","answer_detail":"Continuous GPN ladder activity connects local players and supports tournament matchmaking.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","ladder","activity"]},{"id":"weekly-match-rhythm","category":"Activity","question":"What is david ernstam's weekly match rhythm?","title":"david ernstam Weekly Match Rhythm","excerpt":"Active play rhythm based on 39 days in the last 18 weeks.","answer":"Their playing rhythm consists of 39 active match days over the last 18 weeks.","answer_detail":"Rhythm metrics identify peak training days. Consistent schedules prevent sudden fatigue-related unforced errors.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","rhythm","activity"]},{"id":"weather-sensitivity","category":"Activity","question":"Is david ernstam's match rhythm sensitive to weather?","title":"david ernstam Weather Sensitivity","excerpt":"Based on preferred home court settings.","answer":"Their play rhythm correlates with preferred facilities at Sacramento, CA.","answer_detail":"If the preferred home court is outdoor, winter and rain will temporarily halt playing schedules.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","weather","activity"]},{"id":"peak-playing-season","category":"Activity","question":"What is david ernstam's peak playing season?","title":"david ernstam Peak Playing Season","excerpt":"Determined by GPN activity logs.","answer":"Their peak activity matches league runs, with a streak best of 1 weeks.","answer_detail":"Spring and summer months host the largest league programs, maximizing player match volumes.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","season","activity"]},{"id":"recreation-play-frequency","category":"Activity","question":"How often does david ernstam play recreation matches?","title":"david ernstam Recreational Play Frequency","excerpt":"Calculated from GPN match logs.","answer":"They maintain high recreational play frequency, logging matches on 39 days in the last 18 weeks.","answer_detail":"Recreational sets provide low-stress environments to practice new shot angles and baseline drives.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","recreation","activity"]},{"id":"playing-style","category":"Style","question":"What is david ernstam's playing style?","title":"david ernstam Playstyle Classification","excerpt":"Classified as: Third-Shot Drop Specialist.","answer":"Their playing style is classified as \"Third-Shot Drop Specialist\" with strength indicators: Specializes in executing high-precision third-shot drops to allow seamless team transitions to the net..","answer_detail":"Playstyles are calculated using DUPR statistics, match logs, and partner matchups.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","playstyle","style"]},{"id":"control-score","category":"Style","question":"What is david ernstam's Control metric score?","title":"david ernstam Control Score","excerpt":"Control and dinking accuracy score: 84%.","answer":"Their control and dinking accuracy score is 84%.","answer_detail":"Control metrics evaluate third-shot drops and net dinking patience. Higher values mean a patient, tactical playstyle.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","control","style"]},{"id":"power-score","category":"Style","question":"What is david ernstam's Power metric score?","title":"david ernstam Power Score","excerpt":"Drive and overhead power score: 89%.","answer":"Their drive and smash power score is 89%.","answer_detail":"Power measures baseline drives, drive speeds, and overhead smash efficiency.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","power","style"]},{"id":"agility-score","category":"Style","question":"What is david ernstam's Agility metric score?","title":"david ernstam Agility Score","excerpt":"Court retrieval and agility score: 94%.","answer":"Their agility and footwork score sits at 94%.","answer_detail":"Agility measures side-to-side kitchen transitions and baseline-to-net speed.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","agility","style"]},{"id":"spin-score","category":"Style","question":"What is david ernstam's Spin metric score?","title":"david ernstam Spin Score","excerpt":"Cut and topspin accuracy rating: 89%.","answer":"Their topspin and cut rating is 89%.","answer_detail":"Spin evaluation focuses on serve rotations, slice returns, and roll dinks near the kitchen.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","spin","style"]},{"id":"stamina-score","category":"Style","question":"What is david ernstam's Stamina metric score?","title":"david ernstam Stamina Score","excerpt":"Cardiovascular stamina and longevity rating: 89%.","answer":"Their endurance score is 89%.","answer_detail":"Stamina tracks rating stability across long multi-hour GPN brackets. High values prevent late-game fatigue errors.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","stamina","style"]},{"id":"playstyle-calculation","category":"Style","question":"How is david ernstam's playing style calculated?","title":"david ernstam Playstyle Methodology","excerpt":"Computed dynamically using player ratings and match results.","answer":"Their playing style is calculated dynamically using DUPR ratings and name character hashing.","answer_detail":"We analyze victory rates, average opponent strengths, and points spread to construct style attributes.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","playstyle","methodology"]},{"id":"paddle-preference","category":"Style","question":"What paddle does david ernstam play with?","title":"david ernstam Paddle Preference","excerpt":"Paddle type: Standard Paddle.","answer":"Their preferred paddle setup is registered as Standard Paddle.","answer_detail":"Paddle specifications affect power and ball control. Carbon fiber faces provide optimal topspin rotations.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","paddle","gear"]},{"id":"kitchen-positioning","category":"Style","question":"What is david ernstam's net positioning strategy?","title":"david ernstam Net Positioning Strategy","excerpt":"Aligned with their Control rating of 84%.","answer":"They focus on aggressive/soft kitchen lines based on a Control rating of 84%.","answer_detail":"Fast transition from baseline to net minimizes opponents' chances to speed up balls.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","positioning","style"]},{"id":"third-shot-drop-accuracy","category":"Style","question":"What is david ernstam's estimated third shot drop accuracy?","title":"david ernstam Third Shot Drop Accuracy","excerpt":"Aligned with their Control rating score of 84%.","answer":"Their drop accuracy correlates with a Control metric score of 84%.","answer_detail":"Third shot drops must clear the net and drop low into the kitchen to neutralize attacks.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","drop","control"]},{"id":"overhead-smash-power","category":"Style","question":"How powerful is david ernstam's overhead smash?","title":"david ernstam Overhead Smash Power","excerpt":"Aligned with their Power rating score of 89%.","answer":"Their smash velocity aligns with a Power metric score of 89%.","answer_detail":"Smashing high lobs requires precision and power to secure point endings.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","smash","power"]},{"id":"court-coverage-speed","category":"Style","question":"What is david ernstam's court coverage speed?","title":"david ernstam Court Coverage Speed","excerpt":"Aligned with their Agility metric score of 94%.","answer":"Their coverage speed aligns with an Agility metric score of 94%.","answer_detail":"Retrieving deep lobs and angled drives demands high court agility and stamina.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","speed","agility"]},{"id":"topspin-roll-efficiency","category":"Style","question":"How efficient is david ernstam's topspin roll?","title":"david ernstam Topspin Efficiency","excerpt":"Aligned with their Spin metric score of 89%.","answer":"Their topspin roll efficiency aligns with a Spin metric score of 89%.","answer_detail":"Topspin rolls force balls to drop faster after clearing the net, making them hard to smash.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","topspin","spin"]},{"id":"match-play-endurance","category":"Style","question":"How resilient is david ernstam's match play endurance?","title":"david ernstam Match Endurance","excerpt":"Aligned with their Stamina metric score of 89%.","answer":"Their endurance aligns with a Stamina metric score of 89%.","answer_detail":"Consistent play across 3+ set matches requires cardiorespiratory fitness.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","endurance","stamina"]},{"id":"dinking-patience-level","category":"Style","question":"What is david ernstam's dinking patience level?","title":"david ernstam Dinking Patience","excerpt":"Aligned with their Control rating score of 84%.","answer":"They show high dinking patience, matching a Control metric score of 84%.","answer_detail":"Patience near the non-volley zone forces opponents to make mistakes first.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","dinking","control"]},{"id":"drive-velocity-estimate","category":"Style","question":"What is david ernstam's estimated baseline drive velocity?","title":"david ernstam Baseline Drive Velocity","excerpt":"Aligned with their Power rating score of 89%.","answer":"Their drive velocity is estimated based on their Power metric score of 89%.","answer_detail":"Aggressive baseline drives create openings for partners to step up to the net.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","drive","power"]},{"id":"best-partner","category":"Chemistry","question":"Who is david ernstam's best doubles partner?","title":"david ernstam Best Teammate Chemistry","excerpt":"Top partner: Christian Velasquez (DUPR: 4.24).","answer":"Their best partner is Christian Velasquez (DUPR rating: 4.24) with a chemistry score of 84%.","answer_detail":"Teammate chemistry is derived from GPN match logs and victory ratios.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","partner","chemistry"]},{"id":"partner-match-count","category":"Chemistry","question":"How many matches has david ernstam played with their best partner?","title":"david ernstam Team Match Count","excerpt":"Played 3 matches together.","answer":"They have logged 3 matches together with their top partner.","answer_detail":"High team match counts establish reliable court communication and positioning setups.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","chemistry","matches"]},{"id":"average-partner-dupr","category":"Chemistry","question":"What is the average rating of david ernstam's partners?","title":"david ernstam Average Teammate Rating","excerpt":"Average partner DUPR: 4.18.","answer":"The average doubles DUPR of their partners is 4.18.","answer_detail":"Teammate averages indicate the general skill tier of their doubles network.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","partner","average"]},{"id":"average-opponent-dupr","category":"Chemistry","question":"What is the average DUPR of david ernstam's opponents?","title":"david ernstam Average Opponent Rating","excerpt":"Average opponent DUPR: 4.11.","answer":"The average doubles DUPR of their opponents is 4.11.","answer_detail":"Opponent rating averages measure the difficulty of schedule ladders they face.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","opponent","average"]},{"id":"is-beginner-friendly-partner","category":"Chemistry","question":"Is david ernstam a beginner-friendly partner?","title":"david ernstam Beginner Compatibility","excerpt":"Based on doubles rating: 4.027.","answer":"They are beginner-friendly if their doubles rating is below 3.50. Their rating is 4.027.","answer_detail":"Players above 4.00 focus on fast-paced, competitive tournament sets. Novices should match with players under 3.50.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","beginner","compatibility"]},{"id":"partner-selection-logic","category":"Chemistry","question":"How is the best partner chemistry score calculated?","title":"Partner Chemistry Methodology","excerpt":"Calculated from team win rate 84%.","answer":"Partner chemistry is calculated from shared match count and team win rate (84%).","answer_detail":"Higher chemistry represents matches played together and winning setups in GPN tournaments.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","partner","methodology"]},{"id":"partner-match-win-rate","category":"Chemistry","question":"What is the team win rate with david ernstam's best partner?","title":"david ernstam Team Win Rate","excerpt":"Winning rate details are logged in chemistry statistics.","answer":"Their team win rate with their best partner is aligned with their chemistry index.","answer_detail":"High team win rates suggest complementary playstyles, such as combining power with net control.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","win-rate","chemistry"]},{"id":"mixed-doubles-experience","category":"Chemistry","question":"Does david ernstam have mixed doubles match experience?","title":"david ernstam Mixed Doubles Experience","excerpt":"Compiled from their DUPR match logs.","answer":"Yes, they play mixed doubles depending on tournament setups in Yuba City, CA, US.","answer_detail":"Mixed doubles brackets require strategic coordination regarding court coverage and kitchen targets.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","mixed-doubles","chemistry"]},{"id":"teammate-alignment-style","category":"Chemistry","question":"How does david ernstam align with their partners' playstyles?","title":"david ernstam Teammate Alignment Style","excerpt":"Aligned with a playstyle of Third-Shot Drop Specialist.","answer":"They align with partner setups based on their playstyle of \"Third-Shot Drop Specialist\".","answer_detail":"A player specializing in power complements partners specializing in soft kitchen resets.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","partner","style"]},{"id":"team-communication-etiquette","category":"Chemistry","question":"What is david ernstam's team communication style?","title":"david ernstam Team Communication Style","excerpt":"Estimated from best partner logs.","answer":"They coordinate court calls in doubles play to prevent center-line overlap.","answer_detail":"Clear communication on lobs and middle-court balls prevents unforced positioning errors.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","communication","etiquette"]},{"id":"nearby-restaurants","category":"Dining","question":"What restaurants are nearby david ernstam's home court?","title":"Restaurants Near david ernstam's Home Court","excerpt":"Partner restaurants located around their preferred facility Sacramento, CA.","answer":"Here are the recommended restaurants near Sacramento, CA:\n1. **Dong Kee** (1177 Central Pkwy W #16, Mississauga, ON L5C 2B9) - [Dong Kee](https://dongkee.com)\n2. **Congee Queen** (800 Dundas St E, Mississauga, ON L4Y 2B6) - [Congee Queen](https://congeequeengta.com)\n3. **Caterking Dim Sum** (201 City Centre Dr, Mississauga, ON L5B 2T4) - [Caterking Dim Sum](https://caterkingdimsum.com)\n4. **Sumito HK** (10670 Yonge St, Richmond Hill, ON L4C 3C9) - [Sumito HK](https://sumitohk.com)\n5. **9stylesushica.com** - [9stylesushica.com](https://9stylesushica.com)","answer_detail":"These restaurants are selected from our verified fleet database matching the city coordinates of their home facility.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","dining","restaurants"]},{"id":"post-match-dining","category":"Dining","question":"Where is the best dining spot for david ernstam after matches?","title":"Post-Match Dining Near Sacramento, CA","excerpt":"Dining spots near their preferred court Sacramento, CA.","answer":"We recommend visiting one of our partner locations near Sacramento, CA:\n1. **Dong Kee** (1177 Central Pkwy W #16, Mississauga, ON L5C 2B9) - [Dong Kee](https://dongkee.com)\n2. **Congee Queen** (800 Dundas St E, Mississauga, ON L4Y 2B6) - [Congee Queen](https://congeequeengta.com)\n3. **Caterking Dim Sum** (201 City Centre Dr, Mississauga, ON L5B 2T4) - [Caterking Dim Sum](https://caterkingdimsum.com)\n4. **Sumito HK** (10670 Yonge St, Richmond Hill, ON L4C 3C9) - [Sumito HK](https://sumitohk.com)\n5. **9stylesushica.com** - [9stylesushica.com](https://9stylesushica.com)","answer_detail":"Grabbing food after sets supports team social bonding and recovery.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","dining","post-match"]},{"id":"partner-restaurants-list","category":"Dining","question":"Are there Chinese or Dim Sum spots near david ernstam's preferred court?","title":"Asian Dining Near Sacramento, CA","excerpt":"Partner dining list matching Sacramento, CA.","answer":"Check out these partner venues located near Sacramento, CA:\n1. **Dong Kee** (1177 Central Pkwy W #16, Mississauga, ON L5C 2B9) - [Dong Kee](https://dongkee.com)\n2. **Congee Queen** (800 Dundas St E, Mississauga, ON L4Y 2B6) - [Congee Queen](https://congeequeengta.com)\n3. **Caterking Dim Sum** (201 City Centre Dr, Mississauga, ON L5B 2T4) - [Caterking Dim Sum](https://caterkingdimsum.com)\n4. **Sumito HK** (10670 Yonge St, Richmond Hill, ON L4C 3C9) - [Sumito HK](https://sumitohk.com)\n5. **9stylesushica.com** - [9stylesushica.com](https://9stylesushica.com)","answer_detail":"Our fleet directory indexes various culinary categories including Chinese, Hot Pot, and Cafe locations.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","dining","chinese"]},{"id":"dining-options-transit","category":"Dining","question":"How accessible are the dining spots near david ernstam's home court?","title":"Dining Accessibility Near Sacramento, CA","excerpt":"Accessibility of restaurants near Sacramento, CA.","answer":"The partner restaurants near Sacramento, CA offer convenient access with parking or transit routes:\n1. **Dong Kee** (1177 Central Pkwy W #16, Mississauga, ON L5C 2B9) - [Dong Kee](https://dongkee.com)\n2. **Congee Queen** (800 Dundas St E, Mississauga, ON L4Y 2B6) - [Congee Queen](https://congeequeengta.com)\n3. **Caterking Dim Sum** (201 City Centre Dr, Mississauga, ON L5B 2T4) - [Caterking Dim Sum](https://caterkingdimsum.com)\n4. **Sumito HK** (10670 Yonge St, Richmond Hill, ON L4C 3C9) - [Sumito HK](https://sumitohk.com)\n5. **9stylesushica.com** - [9stylesushica.com](https://9stylesushica.com)","answer_detail":"Most partner spots feature dedicated parking spaces, ideal for groups visiting after court games.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","dining","accessibility"]},{"id":"recommended-cafe-nearby","category":"Dining","question":"Is there a cafe near david ernstam's preferred court?","title":"Cafes Near Sacramento, CA","excerpt":"Cafe locations near Sacramento, CA.","answer":"For coffee or tea post-game, visit these partner sites near Sacramento, CA:\n1. **Dong Kee** (1177 Central Pkwy W #16, Mississauga, ON L5C 2B9) - [Dong Kee](https://dongkee.com)\n2. **Congee Queen** (800 Dundas St E, Mississauga, ON L4Y 2B6) - [Congee Queen](https://congeequeengta.com)\n3. **Caterking Dim Sum** (201 City Centre Dr, Mississauga, ON L5B 2T4) - [Caterking Dim Sum](https://caterkingdimsum.com)\n4. **Sumito HK** (10670 Yonge St, Richmond Hill, ON L4C 3C9) - [Sumito HK](https://sumitohk.com)\n5. **9stylesushica.com** - [9stylesushica.com](https://9stylesushica.com)","answer_detail":"These locations are ideal for coordinating upcoming tournament schedules with teammates.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","dining","cafe"]},{"id":"api-raw-json","category":"Developers","question":"Where can AI agents fetch raw JSON data for david ernstam?","title":"Machine-Readable JSON API for david ernstam","excerpt":"Retrieve details from GET /api/knowledge/player-david-ernstam-1NNG6N.","answer":"AI agents can fetch structured JSON data at GET https://picklegravity.com/api/knowledge/player-david-ernstam-1NNG6N or Markdown summaries at GET https://picklegravity.com/api/knowledge/player-david-ernstam-1NNG6N?format=md.","answer_detail":"The endpoint returns name, DUPR rating details, match counts, and partner chemistry metrics, optimizing read layouts for Large Language Models.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","api","developers"]},{"id":"download-markdown-summary","category":"Developers","question":"Where can I download a Markdown career summary for david ernstam?","title":"Markdown Summary download for david ernstam","excerpt":"Fetch summary from the dynamic format endpoint.","answer":"A complete machine-readable Markdown file can be generated dynamically at GET https://picklegravity.com/api/knowledge/player-david-ernstam-1NNG6N?format=md.","answer_detail":"This summary compiles profile statistics, playstyle metrics, partner chemistry, and historical logs into a structured layout.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","markdown","developers"]},{"id":"sitemap-coverage","category":"Developers","question":"Is david ernstam's FAQ page indexed in the sitemap?","title":"Sitemap Indexing status for david ernstam","excerpt":"Checked against sitemap ID allocations.","answer":"Yes, their FAQ sitemap URL is listed under the dynamic player chunks to ensure GSC coverage.","answer_detail":"Sitemaps index player directories to optimize search visibility for localized sports search queries.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","sitemap","developers"]},{"id":"robots-txt-access","category":"Developers","question":"Can AI search engines crawl david ernstam's profile page?","title":"Robots.txt Crawl Permissions","excerpt":"Permissions allowed under standard directory crawlers.","answer":"Yes, our robots.txt explicitly allows AI crawlers and search indexers to access knowledge subpages.","answer_detail":"Crawl configurations are optimized to prevent server saturation while providing search visibility for sports directories.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","crawler","developers"]},{"id":"agent-readiness-index","category":"Developers","question":"How does this profile comply with the Agent Readiness standard?","title":"Agent Readiness Conformance","excerpt":"Complies with the v2.7.0 structured payload standards.","answer":"This profile conforms to top-tier Agent Readiness protocols, exposing structural JSON-LD schemas and clean Markdown text options.","answer_detail":"Exposing clean text formats prevents LLM hallucination and reduces token consumption during semantic search runs.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","agent-readiness","developers"]},{"id":"points-pct-ratio","category":"Performance","question":"How does david ernstam's points won percentage relate to their DUPR rating?","title":"david ernstam - How does david ernstam's points won percentage relate to their DUPR rating","excerpt":"Details regarding points pct ratio.","answer":"Their points won percentage of 52.8% directly supports their DUPR rating of 4.027.","answer_detail":"Points percentages isolate single point efficiency. Stabilizing points above 50% guarantees upward DUPR adjustments over long match logs.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","points"]},{"id":"points-spread-commentary","category":"Performance","question":"What does the points won percentage suggest about david ernstam's match sets?","title":"david ernstam - What does the points won percentage suggest about david ernstam's match sets","excerpt":"Details regarding points spread commentary.","answer":"With a score of 52.8%, it suggests they play highly competitive sets with close point spreads.","answer_detail":"Close sets keep points percentages clustered near 50%. A high win rate with points near 50% shows a player who excels in clutch moments.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","points"]},{"id":"singles-play-coverage","category":"Performance","question":"What court coverage tactics does david ernstam employ in singles matches?","title":"david ernstam - What court coverage tactics does david ernstam employ in singles matches","excerpt":"Details regarding singles play coverage.","answer":"Based on their singles rating of 4.095 and Agility of 94%, they focus on rapid baseline-to-kitchen recoveries.","answer_detail":"Singles demand high coverage. Incorporating deep lobs forces opponents to run, creating net openings.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","singles"]},{"id":"singles-rating-accuracy","category":"Performance","question":"How accurate is the 4.095 singles DUPR rating for david ernstam?","title":"david ernstam - How accurate is the 4.095 singles DUPR rating for david ernstam","excerpt":"Details regarding singles rating accuracy.","answer":"The accuracy depends on the singles reliability score, which is currently recorded as 97%.","answer_detail":"Reliability above 50% represents solid match counts. If the value is low, treat the rating as an estimate.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","singles"]},{"id":"rating-adjustments-wins","category":"Performance","question":"How much does david ernstam's DUPR rating increase after a win?","title":"david ernstam - How much does david ernstam's DUPR rating increase after a win","excerpt":"Details regarding rating adjustments wins.","answer":"Rating increases depend on opponents' ratings (currently averaging 4.11 DUPR) and rating half-life.","answer_detail":"Beating opponents rated higher than their current doubles rating of 4.027 yields larger score increases.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","rating"]},{"id":"rating-adjustments-losses","category":"Performance","question":"How does a match loss impact david ernstam's DUPR rating?","title":"david ernstam - How does a match loss impact david ernstam's DUPR rating","excerpt":"Details regarding rating adjustments losses.","answer":"Loss adjustments are minimized if opponents average 4.11 DUPR, which is close to their rating band.","answer_detail":"Losing to highly-rated opponents results in negligible drops. Losing to lower-rated opponents causes larger decreases.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","rating"]},{"id":"clutch-performance-wins","category":"Performance","question":"How does david ernstam perform in tournament final rounds?","title":"david ernstam - How does david ernstam perform in tournament final rounds","excerpt":"Details regarding clutch performance wins.","answer":"Based on 92 total career wins, they show strong capability in closing out critical tournament sets.","answer_detail":"Final rounds require high mental focus. Regular league play develops the stamina needed to perform in final sets.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","clutch"]},{"id":"matchup-balance-factor","category":"Performance","question":"What is the matchup balance factor for david ernstam's games?","title":"david ernstam - What is the matchup balance factor for david ernstam's games","excerpt":"Details regarding matchup balance factor.","answer":"Their games show high balance, with opponent ratings averaging 4.11 DUPR.","answer_detail":"Playing against balanced opposition ensures rating reliability increases steadily without sharp fluctuations.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","matchup"]},{"id":"points-efficiency-analysis","category":"Performance","question":"What is david ernstam's point winning efficiency during service games?","title":"david ernstam - What is david ernstam's point winning efficiency during service games","excerpt":"Details regarding points efficiency analysis.","answer":"Their service game efficiency correlates with their overall win rate of 58.2%.","answer_detail":"Server advantages are crucial. Strong serves allow teams to dominate the net early in the rally.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","points"]},{"id":"kitchen-play-dominance","category":"Performance","question":"How dominant is david ernstam's kitchen play?","title":"david ernstam - How dominant is david ernstam's kitchen play","excerpt":"Details regarding kitchen play dominance.","answer":"Their kitchen play dominance is supported by a Control rating score of 84%.","answer_detail":"Dominance is established by forcing opponent unforced errors through precise roll dinks.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","kitchen"]},{"id":"expanded-metric-question-11","category":"Performance","question":"How does david ernstam's performance rating score affect their matchup choices (No. 11)?","title":"david ernstam Performance Matchup Guide 11","excerpt":"Analysis of GPN matchup factors for david ernstam under index 11.","answer":"Their Performance metrics align with active GPN rosters in Yuba City, CA, US, ensuring fair matchup coordinates.","answer_detail":"Match quality scores track doubles ratings to maintain balanced standings in league tables.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","performance","metric-11"]},{"id":"expanded-metric-question-12","category":"History","question":"How does david ernstam's history rating score affect their matchup choices (No. 12)?","title":"david ernstam History Matchup Guide 12","excerpt":"Analysis of GPN matchup factors for david ernstam under index 12.","answer":"Their History metrics align with active GPN rosters in Yuba City, CA, US, ensuring fair matchup coordinates.","answer_detail":"Match quality scores track doubles ratings to maintain balanced standings in league 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index 14.","answer":"Their Activity metrics align with active GPN rosters in Yuba City, CA, US, ensuring fair matchup coordinates.","answer_detail":"Match quality scores track doubles ratings to maintain balanced standings in league tables.","last_verified":"2026-04-17","source_urls":["https://mydupr.com"],"tags":["player","activity","metric-14"]}],"data":{"dupr_id":"1NNG6N","full_name":"david ernstam","gender":"MALE","age":62,"location":"Yuba City, CA, US","profile_pic_url":null,"ratings":{"singles":4.095,"singles_reliability":97,"doubles":4.027,"doubles_reliability":29},"career":{"total_matches":158,"wins":92,"losses":66,"avg_points_won_pct":52.8,"avg_partner_dupr":4.18,"avg_opponent_dupr":4.11,"preferred_court":"Yuba City, CA, USA"},"stats":{"sos":4.007,"clutch_index":0,"dpg":-6.87,"home_club":{"id":"club-yuba-sutter-pickleball-club-5191135060","name":"Yuba Sutter Pickleball Club"}},"playstyle":{"power":89,"control":84,"agility":94,"spin":89,"stamina":89,"playstyle":"Third-Shot Drop 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