Adjusted Efficiency
Opponent-adjusted efficiency model with separate offensive and defensive components.
| Status | implemented | Short Name | PythAdj |
|---|---|---|---|
| Rating Style | probability | Where Shown | teams rankings, team pages, model performance |
Model Card
Best current in-repo adjusted-efficiency baseline: adjusted offensive and defensive efficiency, opponent correction, and pythagorean-style conversion back to win strength.
Validation on this page uses stored season-level full-fit rows plus strict weekly rolling holdouts. Rolling ranks are based on average weekly log loss in the selected league/season. Current scope: Ranked Games. Only games where at least one team had an AP Poll rank on game day. All models are re-evaluated on that same subset, and AP Poll joins the comparison set here.
Selected League / Season
Use the selected scope to inspect this model against peers and across rolling weekly holdouts.
| Full Fit AUC | 0.943 (#4) · 808 games |
|---|---|
| 7-Day Holdout Log Loss | 0.530 (#9) · 5 games |
| Rolling Avg Log Loss | 0.365 (#6) · 22 windows |
| Window Wins | 3 · 83.2% rolling accuracy |
Full-fit AUC is only available where the older stored-rating batch produced that model for the selected scope. Recency and ensemble families can still have valid 7-day and rolling holdout results even when the full-fit columns are blank.
Rolling Holdout Curves
Selected model plus comparison peers for NCAAW 2025-2026. The focus line is Adjusted Efficiency. Click legend items to hide/show peers.
Weekly strict holdout log loss. Lower is better. Showing 6 models across 22 windows.
Recent Windows
| Holdout | Log Loss | Rank | Winner |
|---|---|---|---|
| Apr 1 - Apr 5 | 0.847 | #15/16 | Adjusted Context Blend (0.613) |
| Mar 25 - Mar 31 | 0.389 | #4/16 | Adjusted Context Blend (0.345) |
| Mar 18 - Mar 24 | 0.277 | #1 | Adjusted Efficiency |
| Mar 11 - Mar 17 | 0.180 | #3/16 | Adjusted Context Blend (0.175) |
| Mar 4 - Mar 10 | 0.484 | #8/16 | Margin Recency (0.456) |
| Feb 25 - Mar 3 | 0.450 | #13/16 | Recency Ensemble (0.390) |
| Feb 18 - Feb 24 | 0.457 | #9/16 | Points Off/Def (0.410) |
| Feb 11 - Feb 17 | 0.354 | #3/16 | Points Off/Def (0.346) |
Selected Scope Peer Table
Comparison snapshot for NCAAW 2025-2026. Rows are ordered by rolling log-loss rank; full-fit AUC may be blank for models that do not have legacy full-season rows stored for this scope.
| Model | Full AUC | AUC Rank | 7d LogLoss | 7d Rank | Rolling LL | Rolling Rank | Windows |
|---|---|---|---|---|---|---|---|
| Core Ensemble | - | - | 0.507 | #6 | 0.355 | #1 | 22 |
| Recency Ensemble | - | - | 0.506 | #4 | 0.356 | #2 | 22 |
| Margin | 0.944 | #1 | 0.522 | #8 | 0.358 | #3 | 22 |
| Margin Recency | - | - | 0.493 | #2 | 0.360 | #4 | 22 |
| Log Adjusted | 0.943 | #3 | 0.498 | #3 | 0.364 | #5 | 22 |
| Adjusted Efficiency | 0.943 | #4 | 0.530 | #9 | 0.365 | #6 | 22 |
| Adjusted Context Blend | - | - | 0.461 | #1 | 0.368 | #7 | 22 |
| Points Off/Def | 0.943 | #2 | 0.511 | #7 | 0.383 | #8 | 22 |
League × Season Summary
Cross-scope validation history for Adjusted Efficiency. Rolling ranks are by average weekly log loss.
| League | Season | Full AUC | AUC Rank | 7d LL | 7d Rank | Rolling LL | Rolling Rank | Windows | Wins |
|---|---|---|---|---|---|---|---|---|---|
| NCAAW | 2025-2026 | 0.943 | #4 | 0.530 | #9 | 0.365 | #6 | 22 | 3 |
| NCAAM | 2025-2026 | 0.880 | #1 | 0.493 | #4 | 0.472 | #6 | 22 | 3 |
Output Coverage
Stored site-output rows for this model.
| League | Season | Rows |
|---|---|---|
| WNBA | 2025 | 17 |
| WNBA | 2024-2025 | 20 |
| NCAAWD3 | 2025-2026 | 763 |
| NCAAWD3 | 2024-2025 | 763 |
| NCAAWD2 | 2025-2026 | 772 |
| NCAAWD2 | 2024-2025 | 772 |
| NCAAW | 2025-2026 | 363 |
| NCAAW | 2024-2025 | 362 |
| NCAAW | 2023-2024 | 110 |
| NCAAMD3 | 2025-2026 | 797 |
| NCAAMD3 | 2024-2025 | 797 |
| NCAAMD2 | 2025-2026 | 770 |
| NCAAMD2 | 2024-2025 | 770 |
| NCAAM | 2025-2026 | 365 |
| NCAAM | 2024-2025 | 364 |
| NCAAM | 2023-2024 | 118 |
| NCAAM | 2022-2023 | 118 |
| NCAAM | 2021-2022 | 118 |
| NCAAM | 2020-2021 | 107 |
| NCAAM | 2019-2020 | 113 |
| NCAAM | 2018-2019 | 116 |
| NCAAM | 2017-2018 | 111 |
| NCAAM | 2016-2017 | 113 |
| NCAAM | 2015-2016 | 111 |
| NCAAM | 2014-2015 | 116 |
| NCAAM | 2013-2014 | 115 |
| NCAAM | 2012-2013 | 118 |
| NCAAM | 2011-2012 | 118 |
| NCAAM | 2010-2011 | 118 |
| NCAAM | 2009-2010 | 118 |
| NCAAM | 2008-2009 | 118 |
| NCAAM | 2007-2008 | 118 |
| NCAAM | 2006-2007 | 118 |
| NCAAM | 2005-2006 | 118 |
| NCAAM | 2004-2005 | 118 |
| NCAAM | 2003-2004 | 118 |
| NBA | 2025-2026 | 28 |
| NBA | 2024-2025 | 30 |
| NBA | 2023-2024 | 30 |
| NBA | 2022-2023 | 30 |
| NBA | 2021-2022 | 30 |
| NBA | 2020-2021 | 30 |
| NBA | 2019-2020 | 30 |
| GLEAGUE | 2025-2026 | 31 |
| GLEAGUE | 2024-2025 | 31 |
| EUROLEAGUE | 2025-2026 | 20 |
| EUROLEAGUE | 2024-2025 | 18 |
| EUROLEAGUE | 2023-2024 | 18 |
| EUROLEAGUE | 2022-2023 | 18 |
| EUROLEAGUE | 2021-2022 | 18 |
| EUROLEAGUE | 2020-2021 | 18 |
| EUROCUP | 2025-2026 | 20 |
| EUROCUP | 2024-2025 | 20 |