Game quality
What each result was worth beyond the score. Every play is graded by EPA (expected points added), then adjusted for who it came against: a defence's rating is what it allowed to everyone else that season, so a big day against a bad defence counts for less. Season views include playoff games.
Riley Leonard — 2025
Adj EPA / dropback
-0.055
Raw EPA / dropback
-0.118
Dropbacks
70
Turnover EPA
-14.9
WPA
-0.29
| Week | Opp | Dropbacks | Adj EPA/db | Raw EPA/db | Schedule | Total adj EPA | INT / FL | Turnover EPA | Sacks | Sack EPA | WPA | CPOE |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | TEN | 2 | -1.119 | -1.058 | -0.061 | -2.2 | 0 / 0 | +0.0 | 0 | +0.0 | -0.00 | -74.2 |
| 14 | JAX | 31 | -0.122 | -0.136 | +0.015 | -3.8 | 1 / 0 | -4.3 | 1 | -2.0 | -0.07 | -1.9 |
| 16 | SF | 1 | -3.301 | -3.260 | -0.041 | -3.3 | 0 / 0 | +0.0 | 0 | +0.0 | +0.00 | -78.4 |
| 17 | JAX | 1 | -0.466 | -0.474 | +0.008 | -0.5 | 1 / 0 | -0.5 | 0 | +0.0 | -0.09 | — |
| 18 | HOU | 35 | +0.170 | +0.053 | +0.117 | +5.9 | 1 / 2 | -10.1 | 1 | -6.4 | -0.13 | +1.1 |
Opponent adjustment. A unit's rating for a game is its average over its other games that
season, blended with 16 games' worth of prior (league average plus half of last season's gap from it;
24 games for pass defence, which is noisier). Early in a season that leans on last year; by
midseason it is mostly this year. Chosen by how well it predicts a held-out game: it cut that error by about
a quarter against no shrinkage, and adjusted numbers agree between odd and even weeks more than raw ones do
(team EPA margin r 0.52 → 0.55, defence 0.32 → 0.36, QB EPA/dropback 0.47 → 0.49, 2016–2025).
Win expectancy is a logistic fit of wins on EPA margin over 6,036 completed games (it names the winner 86.5% of the time). These describe what happened; one game is not a forecast. Play-by-play credits the quarterback with every sack and dropback, so a bad line shows up in his numbers. Seasons 2016–2026, built 2026-09-14 01:25 UTC, from nflverse. Write-up:
Win expectancy is a logistic fit of wins on EPA margin over 6,036 completed games (it names the winner 86.5% of the time). These describe what happened; one game is not a forecast. Play-by-play credits the quarterback with every sack and dropback, so a bad line shows up in his numbers. Seasons 2016–2026, built 2026-09-14 01:25 UTC, from nflverse. Write-up:
backtests/nfl_game_quality/FINDINGS.md.