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Player model

Assist Prevention Elo

Online player rating for suppressing the opponent's assist rate.

Status implemented Short Name Ast Def
Rating Style impact Where Shown player pages, players leaderboard

Model Card

Defensive side of the assist event model. Positive values mean a player's minutes tend to reduce how cleanly the opponent generates assisted offense.

Validation here is out of sample. From two weeks into each season, a model trained on earlier games predicts each following week without learning from that week. Predictions use the players' observed minutes; each point is the minutes-weighted predicted and actual rate in that player's games. The source inputs were not verified as identical to the published model revision.

Selected League / Season

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Held-out player predictions

NCAAW 2025-2026: 3745 players with at least 100 held-out minutes. Across players, predicted and actual correlate at r = 0.91 (weighted by held-out minutes). Across these player averages, weighted R² = 0.76 (relative to the weighted mean of actual held-out outcomes). Per held-out team game, squared error is 21.8% below predicting the league average. Each dot is a player (500 with the most held-out minutes are plotted; larger dots had more); on the dashed line, actual equals predicted. Select a dot for the player.

Select a dot to see the player.

Above prediction

PlayerHeld-out minutesPredictedActual
Jada Leonard1010 +18.3+20.2
Stailee Heard947 +19.1+21.0
Kyleigh Brown946 +18.9+20.8
J. Jones-Brown951 +21.7+23.4
Macey Fegan969 +18.4+20.1
Meri Kanerva1001 +22.4+24.0
Colbi Maples997 +18.4+20.0
Kenley McCarn975 +17.5+19.0
Brittani Wells977 +17.5+18.9
Savannah Catalon969 +20.5+21.9

Below prediction

PlayerHeld-out minutesPredictedActual
Kailee McDonald996 +13.3+10.2
Ava Renninger1077 +13.4+10.4
Ashlon Jackson1074 +16.8+14.1
Taina Mair1060 +16.8+14.2
Rori Harmon1065 +16.0+13.6
Madison Booker1161 +16.0+13.6
Kaemyn Bekemeier1114 +16.3+13.9
Zyanna Walker949 +17.5+15.2
Aaliyah Chavez950 +14.9+12.7
Jordan Lee1121 +15.8+13.6

Output Coverage

Rows in each model's current published run (or legacy rows where no run is selected).

League Season Rows
WNBA 2026 217
NCAAW 2026-2027 97
NCAAW 2025-2026 4434
NCAAM 2026-2027 63
NCAAM 2025-2026 4582
NCAAM 2021-2022 4164
NCAAM 2020-2021 1811
NCAAM 2019-2020 1864
NCAAM 2018-2019 2417
NCAAM 2012-2013 3964
NBA 2026-2027 341
NBA 2025-2026 542