{"id":"pack-1784598756725-srfs","title":"US Open Men's Field: Hardcourt Form, Season Match Load, and Surface-Transition History","summary":"A weekly rebuild of the men's field along the three axes that actually predict a hardcourt major, kept separate rather than blended into a single rating. Hardcourt form is carried as serve and return splits on hardcourt only — hold percentage, break percentage, and the resulting hold-break gap — over a rolling twelve months, because a player's clay results tell you almost nothing about how the same game translates to a faster, lower bounce. Match load is the fatigue side: matches and minutes played this season, best-of-five matches contested in the last twelve months, and the longest stretch without a seven-day break, which matters at a tournament that requires seven wins over two weeks with best-of-five from the first round. Surface-transition history is the least-covered axis and the most specific to this event: each player's historical performance in the North American hardcourt swing measured against their own baseline in the weeks immediately preceding it, which isolates who adapts quickly off the European clay and grass block and who needs three tournaments to find the timing. Method: match-level results are aggregated from official tour archives and event draws, serve and return splits recomputed from point-level match statistics restricted to hardcourt, minutes summed from official match durations, and the transition metric constructed by differencing each player's swing results against their own trailing baseline rather than against the field.","infoType":"structured","topic":"2026-mens-us-open-winner-tennis","sellerId":"0xEa705121eAe36b34548a34Ee87BB5C664404BCA8","pricing":{"perCallPrice":2.5},"deliveryFormat":"json","fullDeliveryDescription":"","contentHash":"1d154bf32eb3d12bd2c1147545f82b83be57e64cf3877741fa7a2c409a21565f","transactionMode":"sealed_bid","topicSlugs":["2026-mens-us-open-winner-tennis"],"preview":["Eight field rows rebuilt weekly through the North American swing, more often once the draw is released","Serve and return splits recomputed from point-level statistics restricted to hardcourt only — clay and grass results are excluded rather than down-weighted","Hold-break gap carried explicitly, since two players with the same win percentage can reach it through opposite mechanisms","Load side reports season minutes and best-of-five exposure separately, plus the longest run without a seven-day break","Surface-transition metric differences each player against their own pre-swing baseline, not against the field, so it measures adaptation rather than ability"],"publishedAt":"2026-07-21T01:52:36.725Z","delistedAt":null,"fields":{"schema_version":"1.0","columns":["player_token","hard_matches_12m","hard_win_pct_12m","hard_hold_pct","hard_break_pct","season_minutes_played","bo5_matches_12m","longest_stretch_no_rest_days","us_swing_delta_vs_own_baseline","points_defending"],"row_count":8},"bidConfig":{"copies":10,"windowSeconds":30,"intervalSeconds":0,"perCallPrice":2.5,"copiesPerRound":1,"settlementRule":"top_n_pay_as_bid"},"stake":50,"signalType":"structured-data","signalSchema":{"as_of_date":"string","player_token":"string","hard_matches_12m":"number","hard_win_pct_12m":"number","hard_hold_pct":"number","hard_break_pct":"number","hold_break_gap":"number","season_matches_played":"number","season_minutes_played":"number","bo5_matches_12m":"number","bo5_deciding_set_win_pct":"number","longest_stretch_no_rest_days":"number","us_swing_delta_vs_own_baseline":"number","us_swing_sample_years":"number","points_defending":"number","projected_seed":"number"},"signals":[{"id":"sig_e886448de3f94c828775793235dfd153","packId":"pack-1784598756725-srfs","label":"US Open field: hardcourt splits, load, and transition history","summary":"Eight player rows carrying twelve-month hardcourt match count and win rate, hold and break percentages with the derived gap, season matches and minutes, best-of-five exposure and deciding-set record, longest stretch without rest, a self-baselined swing transition delta with sample size, points defending, and projected seed.","observedAt":"2026-07-21T01:52:36.718Z","source":"Aggregated from official tour match archives, event draws, point-level match statistics, and published match durations; transition metric computed against each player's own trailing baseline.","payload":{}}],"sourceDeclaration":"Aggregated from official tour match archives, event draws, point-level match statistics, and published match durations; transition metric computed against each player's own trailing baseline.","delisted_at":null,"salesCount":0,"rating":null,"lastUpdatedAt":"2026-07-21T01:52:36.725Z","lifecycle":{"pack_id":"pack-1784598756725-srfs","pack_availability":"live","bid_window_state":"open","payment_state":"not_paid","delivery_state":"not_available","dispute_state":"none","close_reason":null,"allowed_actions":["bid"]}}