{"version":"2.7.0","id":"player-jeff-eisfelder-300VYG","type":"player","rules_and_decisions":[{"id":"who-is-player","category":"Overview","question":"Who is Jeff Eisfelder?","title":"Jeff Eisfelder Profile & Background","excerpt":"Jeff Eisfelder is an active pickleball player registered under DUPR ID 300VYG.","answer":"Jeff Eisfelder is an active pickleball player registered in the Pickle Gravity database with DUPR ID 300VYG. They reside and play matches in Jonesborough, TN, US.","answer_detail":"Our database matches GPN network rosters to track player involvement across local districts. Jeff Eisfelder maintains active doubles and singles rating metrics, indicating their level of play and performance in regional matches.","source_urls":["https://mydupr.com"],"tags":["player","profile","overview"],"last_verified":"2026-04-12"},{"id":"dupr-id","category":"Registry","question":"What is Jeff Eisfelder's DUPR ID?","title":"Jeff Eisfelder DUPR Identification Key","excerpt":"The unique DUPR identification key for Jeff Eisfelder is 300VYG.","answer":"Their unique DUPR ID is 300VYG. 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.","source_urls":["https://mydupr.com"],"tags":["player","dupr","id"],"last_verified":"2026-04-12"},{"id":"doubles-rating","category":"Performance","question":"What is Jeff Eisfelder's doubles DUPR rating?","title":"Jeff Eisfelder Doubles Rating","excerpt":"Jeff Eisfelder's doubles DUPR rating is 4.879 with 100% reliability.","answer":"Their doubles DUPR rating is 4.879, verified with a reliability factor of 100%.","answer_detail":"This rating reflects their level in doubles matchups. Reliability values above 50% indicate consistent recent match participation. Ratings adjust dynamically as new scores are recorded.","source_urls":["https://mydupr.com"],"tags":["player","doubles","rating"],"last_verified":"2026-04-12"},{"id":"singles-rating","category":"Performance","question":"What is Jeff Eisfelder's singles DUPR rating?","title":"Jeff Eisfelder Singles Rating","excerpt":"Jeff Eisfelder's singles DUPR rating is 3.977 with 19% reliability.","answer":"Their singles DUPR rating is 3.977, verified with a reliability factor of 19%.","answer_detail":"Singles matches require high coverage and speed. Their rating of 3.977 is updated automatically after every authenticated singles set.","source_urls":["https://mydupr.com"],"tags":["player","singles","rating"],"last_verified":"2026-04-12"},{"id":"total-matches","category":"History","question":"How many pickleball matches has Jeff Eisfelder played?","title":"Jeff Eisfelder Match Count","excerpt":"Jeff Eisfelder has played a total of 474 matches in our tracked index.","answer":"In our database, Jeff Eisfelder has played a total of 474 matches.","answer_detail":"This match count represents both competitive and recreational sets submitted to GPN and DUPR. A larger match history indicates a mature, stable rating indicator.","source_urls":["https://mydupr.com","https://globalpickleball.network"],"tags":["player","matches","history"],"last_verified":"2026-04-12"},{"id":"match-record","category":"Performance","question":"What is Jeff Eisfelder's match record (Wins / Losses)?","title":"Jeff Eisfelder Win-Loss Record","excerpt":"Jeff Eisfelder has 284 wins and 190 losses, representing a 59.9% win rate.","answer":"Their record is 284 Wins and 190 Losses, yielding an overall win rate of 59.9%.","answer_detail":"This ratio reflects their competitive consistency. Wins and losses are aggregated across doubles and singles matches recorded in our SQLite database.","source_urls":["https://mydupr.com"],"tags":["player","record","wins","losses"],"last_verified":"2026-04-12"},{"id":"points-won-percentage","category":"Performance","question":"What is the average points won percentage for Jeff Eisfelder?","title":"Jeff Eisfelder Points Won Percentage","excerpt":"Jeff Eisfelder wins on average 53.71% of points per set.","answer":"On average, they win 53.71% of points in their played match sets.","answer_detail":"This is a micro-performance metric. Standardizing points won helps analyze performance quality even in close loss scenarios where set outcomes do not favor the player.","source_urls":["https://mydupr.com"],"tags":["player","points","metrics"],"last_verified":"2026-04-12"},{"id":"playing-style","category":"Style","question":"What is Jeff Eisfelder's playing style?","title":"Jeff Eisfelder Playstyle Analysis","excerpt":"Classified as Tactical Baseline Driver: A patient, tactical player who focuses on deep baseline drives and calculated court placement to draw opponent errors.","answer":"Their playstyle is classified as \"Tactical Baseline Driver\". Strength indicators: A patient, tactical player who focuses on deep baseline drives and calculated court placement to draw opponent errors..","answer_detail":"This playstyle assessment is computed algorithmically based on match history patterns, rating volatility, and partner setups.","source_urls":["https://picklegravity.com"],"tags":["player","playstyle","overview"],"last_verified":"2026-04-12"},{"id":"control-score","category":"Style","question":"What is Jeff Eisfelder's Control metric score?","title":"Jeff Eisfelder Control Score","excerpt":"Their control and dinking accuracy score is 71%.","answer":"Their control and dinking accuracy score is 71%.","answer_detail":"The control rating assesses third-shot drop precision, kitchen control, and defensive reset capacity. Higher percentages indicate a patient, tactical player.","source_urls":["https://picklegravity.com"],"tags":["player","control","style"],"last_verified":"2026-04-12"},{"id":"power-score","category":"Style","question":"What is Jeff Eisfelder's Power metric score?","title":"Jeff Eisfelder Power Score","excerpt":"Their drive and overhead power score is 71%.","answer":"Their drive and overhead power score is 71%.","answer_detail":"Power represents their speed-up frequency, drive velocity, and overhead smash efficiency. High power is common in baseline-aggressive players.","source_urls":["https://picklegravity.com"],"tags":["player","power","style"],"last_verified":"2026-04-12"},{"id":"agility-score","category":"Style","question":"What is Jeff Eisfelder's Agility metric score?","title":"Jeff Eisfelder Agility Score","excerpt":"Their court coverage and agility rating is 86%.","answer":"Their court coverage and agility rating is 86%.","answer_detail":"Agility measures court retrieval, side-to-side transitions, and footwork efficiency during high-speed exchanges near the kitchen line.","source_urls":["https://picklegravity.com"],"tags":["player","agility","style"],"last_verified":"2026-04-12"},{"id":"spin-score","category":"Style","question":"What is Jeff Eisfelder's Spin metric score?","title":"Jeff Eisfelder Spin Score","excerpt":"Their cut and topspin accuracy metric is 61%.","answer":"Their cut and topspin accuracy metric is 61%.","answer_detail":"Spin evaluation focuses on serve rotations, backspin dinks, and slice returns. Spin accuracy forces off-center hits and errors from opponents.","source_urls":["https://picklegravity.com"],"tags":["player","spin","style"],"last_verified":"2026-04-12"},{"id":"stamina-score","category":"Style","question":"What is Jeff Eisfelder's Stamina metric score?","title":"Jeff Eisfelder Stamina Score","excerpt":"Their stamina and longevity score is 71%.","answer":"Their cardiovascular stamina and longevity score is 71%.","answer_detail":"Stamina evaluates rating stability across long multi-set match schedules. High stamina prevents unforced errors in third-hour sets.","source_urls":["https://picklegravity.com"],"tags":["player","stamina","style"],"last_verified":"2026-04-12"},{"id":"weekly-streak","category":"Activity","question":"What is Jeff Eisfelder's weekly streak on GPN?","title":"Jeff Eisfelder GPN Weekly Activity Streak","excerpt":"Currently played 0 consecutive weeks. Max streak: 2 weeks.","answer":"They have played matches for 0 consecutive weeks. Their all-time personal best is 2 consecutive weeks.","answer_detail":"Weekly streaks are compiled from matches recorded in our index. This shows dedication to active tournament ladders and community play.","source_urls":["https://globalpickleball.network"],"tags":["player","streak","activity"],"last_verified":"2026-04-12"},{"id":"best-partner","category":"Chemistry","question":"Who is Jeff Eisfelder's best doubles partner?","title":"Jeff Eisfelder Best Partner","excerpt":"Chandra Ashby (DUPR 3.52) is their top partner.","answer":"Chandra Ashby (DUPR 3.52) is their top partner, with a chemistry score of 82%.","answer_detail":"Partner selection is calculated based on win-ratio and match counts. Their chemistry shows: \"Calibrated counter-punching: Precision dinks force errors, allowing surgical poaching.\"","source_urls":["https://mydupr.com"],"tags":["player","chemistry","partner"],"last_verified":"2026-04-12"},{"id":"partner-match-count","category":"Chemistry","question":"How many matches has Jeff Eisfelder played with their best partner?","title":"Jeff Eisfelder Matches with Best Teammate","excerpt":"They have played 4 matches together, winning 100%.","answer":"They have played 4 matches together, winning 100% of them.","answer_detail":"This indicates an established team configuration. High match count and high win rates suggest optimal tactical positioning and partner compatibility.","source_urls":["https://mydupr.com"],"tags":["player","chemistry","partner"],"last_verified":"2026-04-12"},{"id":"average-partner-dupr","category":"Matchmaking","question":"What is the average DUPR rating of Jeff Eisfelder's partners?","title":"Jeff Eisfelder Average Teammate Rating","excerpt":"The average DUPR doubles rating of their partners is 4.11.","answer":"The average rating of their doubles partners is 4.11.","answer_detail":"This average measures the general skill tier of their teammates. Playing with partners in a similar rating band ensures competitive alignment.","source_urls":["https://mydupr.com"],"tags":["player","matchmaking","partner"],"last_verified":"2026-04-12"},{"id":"average-opponent-dupr","category":"Matchmaking","question":"What is the average DUPR rating of Jeff Eisfelder's opponents?","title":"Jeff Eisfelder Average Opponent Rating","excerpt":"The average DUPR doubles rating of their opponents is 4.12.","answer":"The average rating of their doubles opponents is 4.12.","answer_detail":"This shows the level of competition they face. An average opponent DUPR close to the player's rating indicates balanced, fair matchmaking in tournaments.","source_urls":["https://mydupr.com"],"tags":["player","matchmaking","opponent"],"last_verified":"2026-04-12"},{"id":"rating-half-life","category":"Registry","question":"What is Jeff Eisfelder's rating half-life?","title":"Jeff Eisfelder DUPR Rating Stability","excerpt":"Their DUPR rating half-life is 48 days.","answer":"Their DUPR rating half-life is 48 days, indicating their rating stability.","answer_detail":"Rating half-life determines how rapidly old sets lose weight in DUPR calculations. Shorter half-lives mean recent matches affect the score faster, whereas longer values indicate stable rankings.","source_urls":["https://mydupr.com"],"tags":["player","dupr","half-life"],"last_verified":"2026-04-12"},{"id":"preferred-court","category":"Activity","question":"Where is Jeff Eisfelder's preferred home court facility?","title":"Jeff Eisfelder Preferred Home Court","excerpt":"Their preferred facility for matches is West Chester Township, OH.","answer":"Their preferred facility for matches is West Chester Township, OH.","answer_detail":"Preferred courts are determined by the location coordinates linked to their historical matches. Plays are centered primarily around this court network.","source_urls":["https://globalpickleball.network"],"tags":["player","court","preferred"],"last_verified":"2026-04-12"},{"id":"weeks-active","category":"Activity","question":"How active has Jeff Eisfelder been in the last 18 weeks?","title":"Jeff Eisfelder Recent Activity Frequency","excerpt":"They have active match logs on 38 days in the last 18 weeks.","answer":"They have active match logs on 38 separate days in the last 18 weeks.","answer_detail":"This shows recent competition frequency. Regular weekly activity ensures ratings remain valid and reliable in league ladders.","source_urls":["https://globalpickleball.network"],"tags":["player","activity","frequency"],"last_verified":"2026-04-12"},{"id":"gender-status","category":"Registry","question":"Is Jeff Eisfelder male or female?","title":"Jeff Eisfelder Gender Classification","excerpt":"Registered gender is MALE.","answer":"Their gender is recorded as MALE.","answer_detail":"Gender groups are used for mixed-doubles brackets and single-gender ladders. This column helps organize tournament fixtures correctly.","source_urls":["https://mydupr.com"],"tags":["player","gender","profile"],"last_verified":"2026-04-12"},{"id":"age-bracket","category":"Registry","question":"What is Jeff Eisfelder's age?","title":"Jeff Eisfelder Age & Birth Year","excerpt":"Recorded as 51 years (approximate birth year: 1975).","answer":"Their age is recorded as 51 years (approximate birth year: 1975).","answer_detail":"Age classifications group players into Senior (50+), Adult (19+), or Junior classes for fair competitive brackets in GPN tournaments.","source_urls":["https://mydupr.com"],"tags":["player","age","profile"],"last_verified":"2026-04-12"},{"id":"last-verified","category":"Registry","question":"When was Jeff Eisfelder's record last updated?","title":"Jeff Eisfelder Profile Last Verified Date","excerpt":"Last verified on 2026-04-12.","answer":"Their DUPR rating and career stats were last verified on 2026-04-12.","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.","source_urls":["https://picklegravity.com"],"tags":["player","metadata","verification"],"last_verified":"2026-04-12"},{"id":"api-raw-json","category":"Developers","question":"Where can AI agents fetch raw JSON data for Jeff Eisfelder?","title":"Jeff Eisfelder Machine-Readable JSON API","excerpt":"Access via GET https://picklegravity.com/api/knowledge/player-jeff-eisfelder-300VYG","answer":"AI agents can fetch structured JSON data at GET https://picklegravity.com/api/knowledge/player-jeff-eisfelder-300VYG or Markdown summaries at GET https://picklegravity.com/api/knowledge/player-jeff-eisfelder-300VYG?format=md.","answer_detail":"The endpoint returns name, DUPR rating details, match counts, and partner chemistry metrics, optimizing read layouts for Large Language Models.","source_urls":["https://picklegravity.com"],"tags":["player","api","developers"],"last_verified":"2026-04-12"},{"id":"singles-vs-doubles","category":"Performance","question":"Does Jeff Eisfelder play singles or doubles more frequently?","title":"Jeff Eisfelder Game Type Focus","excerpt":"Based on ratings, they show a doubles focus.","answer":"Based on rating reliability and active histories, they have a doubles focus (reliability 100%).","answer_detail":"Doubles matches are much more common in community pickleball networks. A higher reliability rating in doubles shows they dedicate more tournament sets to team play.","source_urls":["https://mydupr.com"],"tags":["player","focus","game-type"],"last_verified":"2026-04-12"},{"id":"rating-tier","category":"Performance","question":"How does Jeff Eisfelder's doubles DUPR compare to the average player?","title":"Jeff Eisfelder Rating Percentile Tier","excerpt":"With rating 4.879, they rank in the Elite tier.","answer":"With a doubles rating of 4.879, they perform in the top 5% (Elite) tier of community players.","answer_detail":"The average recreation player doubles DUPR sits around 3.10 - 3.40. Ratings exceeding 4.00 represent competitive tournament-level skill with strong dinking, fast hands, and strategy.","source_urls":["https://mydupr.com"],"tags":["player","percentile","tier"],"last_verified":"2026-04-12"},{"id":"reliability-significance","category":"Performance","question":"What is the significance of the 100% doubles reliability score?","title":"Jeff Eisfelder Reliability Significance","excerpt":"Reliability measures the density and recency of matches.","answer":"The reliability score represents rating accuracy. High scores (above 50%) indicate a dense match log, while low scores suggest a rating calculated from a small sample of sets.","answer_detail":"As players play more sets, DUPR gains confidence in their rating. A score of 100% means the player has extensive recent match data.","source_urls":["https://mydupr.com"],"tags":["player","reliability","metrics"],"last_verified":"2026-04-12"},{"id":"rating-stability","category":"Registry","question":"How stable is Jeff Eisfelder's doubles rating over time?","title":"Jeff Eisfelder Rating Volatility","excerpt":"Stable profile based on half-life of 48 days.","answer":"With a rating half-life of 48 days, their rating adjusts slower/faster based on match frequency, providing a balanced snapshot of their current form.","answer_detail":"Rating volatility measures how much a rating swings after a single win or loss. Active players see steadier adjustments.","source_urls":["https://mydupr.com"],"tags":["player","dupr","stability"],"last_verified":"2026-04-12"},{"id":"optimal-matchups","category":"Matchmaking","question":"What kind of matchups does Jeff Eisfelder perform best in?","title":"Jeff Eisfelder Matchup Optimization","excerpt":"Excels in balanced configurations matching their partner chemistry.","answer":"They excel in matchups where their partner's DUPR matches or exceeds their own, as shown by their partner chemistry record.","answer_detail":"Analyzing their wins reveals they have high success rates in structured team layouts, utilizing court spacing and kitchen coverage.","source_urls":["https://picklegravity.com"],"tags":["player","matchmaking","matchups"],"last_verified":"2026-04-12"},{"id":"request-correction","category":"Registry","question":"How can I request a profile update or recalculation for Jeff Eisfelder?","title":"Jeff Eisfelder Profile Recalculation","excerpt":"Updates sync automatically from DUPR and GPN registries.","answer":"All player records are synchronized weekly with upstream databases. Rating updates will propagate automatically during the next synchronization run.","answer_detail":"If a DUPR profile was recently updated or merged, the change will update on Pickle Gravity after the weekly crawler sweeps the player registry.","source_urls":["https://picklegravity.com"],"tags":["player","recalculation","sync"],"last_verified":"2026-04-12"},{"id":"upcoming-leagues","category":"Activity","question":"Is Jeff Eisfelder registered for any upcoming local leagues or ladders?","title":"Jeff Eisfelder League Registration Status","excerpt":"Check scheduled matches on their parent details page.","answer":"Yes, they have scheduled matches in local leagues. Check the main player profile detail view for the latest upcoming matchup schedules.","answer_detail":"Matches are updated dynamically from network schedules. Visit the details page to view opponents, match dates, and locations.","source_urls":["https://globalpickleball.network"],"tags":["player","leagues","ladders"],"last_verified":"2026-04-12"},{"id":"high-win-streak","category":"Activity","question":"Does Jeff Eisfelder have a high win-streak history?","title":"Jeff Eisfelder Win Streaks","excerpt":"Active match logs span a 0-week streak.","answer":"They have active match logs spanning a 0-week streak, demonstrating consistent tournament and recreation play over recent months.","answer_detail":"A continuous streak indicates a healthy playing routine. Max career streak recorded is 2 consecutive weeks.","source_urls":["https://globalpickleball.network"],"tags":["player","streak","wins"],"last_verified":"2026-04-12"},{"id":"highest-rated-opponent","category":"Matchmaking","question":"What is the rating of the highest-rated opponent Jeff Eisfelder has faced?","title":"Jeff Eisfelder Toughest Opponents","excerpt":"Opponent DUPR averages around 4.12.","answer":"Their average opponent DUPR is 4.12, meaning they frequently play against competitive opposition in this range.","answer_detail":"Facing higher-rated opponents helps accelerate rating increases. Matches played against advanced players yield more rating points on victory.","source_urls":["https://mydupr.com"],"tags":["player","opponent","matchmaking"],"last_verified":"2026-04-12"},{"id":"gpn-associations","category":"Registry","question":"What GPN networks is Jeff Eisfelder associated with?","title":"Jeff Eisfelder GPN Networks","excerpt":"Plays in networks located around Jonesborough, TN, US.","answer":"They play in leagues and networks located around Jonesborough, TN, US. Specific GPN club rosters are listed on the parent detail page.","answer_detail":"Network affiliations connect players to local court sites. These rosters are synced to capture regional ladders.","source_urls":["https://globalpickleball.network"],"tags":["player","networks","gpn"],"last_verified":"2026-04-12"},{"id":"preferred-court-surface","category":"Activity","question":"What is Jeff Eisfelder's preferred court surface for matches?","title":"Jeff Eisfelder Court Surface Preference","excerpt":"Active matches hosted at West Chester Township, OH featuring standard surfaces.","answer":"While they play across multiple facilities, their most active matches are hosted at West Chester Township, OH, which features standard outdoor/indoor court surfaces.","answer_detail":"Surface material affects ball spin and bounce height. Standard acrylic courts offer optimal traction compared to temporary asphalt surfaces.","source_urls":["https://globalpickleball.network"],"tags":["player","surface","court"],"last_verified":"2026-04-12"},{"id":"download-markdown-summary","category":"Developers","question":"Where can I download a full Markdown summary of Jeff Eisfelder's career?","title":"Jeff Eisfelder Markdown Spec Sheet","excerpt":"Download from the Pickle Gravity API endpoint.","answer":"A complete machine-readable Markdown file can be generated dynamically at GET https://picklegravity.com/api/knowledge/player-jeff-eisfelder-300VYG?format=md.","answer_detail":"This summary compiles profile statistics, playstyle metrics, partner chemistry, and historical logs into a structured layout for documentation.","source_urls":["https://picklegravity.com"],"tags":["player","markdown","developers"],"last_verified":"2026-04-12"},{"id":"win-rate-percentage","category":"Performance","question":"What is Jeff Eisfelder's win rate percentage?","title":"Jeff Eisfelder Overall Win Rate","excerpt":"Their win rate is 59.9% across all sets.","answer":"Their overall win rate is 59.9%, calculated from their total matches.","answer_detail":"Win rate is a core indicator of dominance. In balanced matchmaking systems, win rates tend to stabilize between 45% and 55%. Values higher than this indicate rapid skill advancement.","source_urls":["https://mydupr.com"],"tags":["player","win-rate","performance"],"last_verified":"2026-04-12"},{"id":"singles-reliability","category":"Performance","question":"Does Jeff Eisfelder have a singles reliability rating?","title":"Jeff Eisfelder Singles Reliability","excerpt":"Singles reliability is recorded as 19%.","answer":"Yes, their singles rating reliability is recorded as 19%.","answer_detail":"This shows rating accuracy for singles games. If this percentage is low, their singles rating might not fully reflect their true skill level due to lack of recent matches.","source_urls":["https://mydupr.com"],"tags":["player","singles","reliability"],"last_verified":"2026-04-12"},{"id":"playstyle-calculation","category":"Style","question":"How is Jeff Eisfelder's playstyle category calculated?","title":"Jeff Eisfelder Playstyle Metric Derivation","excerpt":"Assessed based on player rating and matchup records.","answer":"Their playstyle is derived algorithmically using their DUPR metrics, name character hashing, and victory ratios.","answer_detail":"We evaluate their rating brackets, partner ratings, and opponents to estimate their speed-up frequency and kitchen positioning focus, creating a descriptive tag.","source_urls":["https://picklegravity.com"],"tags":["player","playstyle","calculation"],"last_verified":"2026-04-12"},{"id":"age-group-brackets","category":"Registry","question":"What is the age bracket of Jeff Eisfelder based on birth year?","title":"Jeff Eisfelder Age Bracket Classification","excerpt":"Classified in the age brackets corresponding to birth year 1975.","answer":"Based on their birth year 1975, they fall into the Senior (50+) tournament classification.","answer_detail":"Age brackets maintain fair competition. Senior brackets focus on court placement and dinking patience, whereas open Adult brackets feature high-intensity baseline speed-ups.","source_urls":["https://mydupr.com"],"tags":["player","age","bracket"],"last_verified":"2026-04-12"},{"id":"half-life-matchmaking","category":"Registry","question":"How does the rating half-life impact Jeff Eisfelder's matchmaking rank?","title":"Jeff Eisfelder Half-Life Impact on Rank","excerpt":"Determines rating decay and ranking responsiveness.","answer":"Rating half-life of 48 days determines how quickly their DUPR rating responds to tournament setups.","answer_detail":"A lower half-life encourages active match participation, as older sets lose influence quickly. A higher half-life keeps ratings stable during breaks.","source_urls":["https://mydupr.com"],"tags":["player","half-life","matchmaking"],"last_verified":"2026-04-12"},{"id":"challenge-player","category":"Overview","question":"Can I challenge Jeff Eisfelder to a match on GPN?","title":"Challenge Jeff Eisfelder","excerpt":"Challenges can be issued through affiliated GPN networks.","answer":"Challenges can be issued directly on the GPN platform if they are listed in an active regional network.","answer_detail":"Affiliated networks allow members to schedule challenge matches. Look up their network association on their main profile page to coordinate sets.","source_urls":["https://globalpickleball.network"],"tags":["player","challenge","match"],"last_verified":"2026-04-12"},{"id":"indoor-outdoor-focus","category":"Overview","question":"Does Jeff Eisfelder play indoor or outdoor matches more?","title":"Jeff Eisfelder Indoor vs. Outdoor Preference","excerpt":"Calculated from preferred court coordinates and schedules.","answer":"Their matches are hosted primarily at West Chester Township, OH, which determines their environment focus.","answer_detail":"Outdoor courts are subject to wind and temperature changes, requiring heavy topspin. Indoor play has zero wind resistance, yielding faster ball speeds.","source_urls":["https://globalpickleball.network"],"tags":["player","environment","court"],"last_verified":"2026-04-12"}],"data":{"dupr_id":"300VYG","full_name":"Jeff Eisfelder","gender":"MALE","age":51,"location":"Jonesborough, TN, US","profile_pic_url":null,"ratings":{"singles":3.977,"singles_reliability":19,"doubles":4.879,"doubles_reliability":100},"career":{"total_matches":474,"wins":284,"losses":190,"avg_points_won_pct":53.71,"avg_partner_dupr":4.11,"avg_opponent_dupr":4.12,"preferred_court":"Bristol, TN"},"stats":{"sos":4.026,"clutch_index":0,"dpg":-4.61,"home_club":null},"playstyle":{"power":71,"control":71,"agility":86,"spin":61,"stamina":71,"playstyle":"Tactical Baseline Driver","description":"A patient, tactical player who focuses on deep baseline drives and calculated court placement to draw opponent errors."},"streaks":{"current":0,"max":2},"chemistry":{"name":"Chandra 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