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.

Josh Allen — 2022

Adj EPA / dropback
+0.130
Raw EPA / dropback
+0.128
Dropbacks
689
Turnover EPA
-98.2
WPA
+1.61
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
1LA 33 +0.434 +0.414 +0.020 +14.3 2 / 0 -9.6 2 -1.9 +0.35 +11.3
2TEN 39 +0.425 +0.416 +0.009 +16.6 0 / 0 +0.0 1 -1.3 +0.39 +3.8
3MIA 66 +0.110 +0.096 +0.014 +7.3 0 / 1 -4.4 4 -10.3 -0.11 +4.3
4BAL 37 +0.021 +0.056 -0.034 +0.8 1 / 0 -5.5 1 -2.0 +0.02 -11.1
5PIT 31 +0.790 +0.802 -0.012 +24.5 1 / 0 -5.2 0 +0.0 +0.31 +4.7
6KC 41 +0.269 +0.272 -0.004 +11.0 0 / 0 +0.0 1 -1.8 +0.64 +5.2
8GB 27 +0.047 +0.023 +0.024 +1.3 2 / 0 -7.4 2 -1.1 +0.08 -9.5
9NYJ 39 -0.351 -0.326 -0.026 -13.7 2 / 0 -9.5 5 -4.8 -0.52 -8.3
10MIN 45 +0.056 +0.061 -0.005 +2.5 2 / 0 -7.7 2 -5.1 -0.31 +6.3
11CLE 29 +0.283 +0.240 +0.044 +8.2 0 / 0 +0.0 2 -2.1 +0.26 +2.9
12DET 45 -0.114 -0.016 -0.097 -5.1 1 / 0 -5.6 3 -3.7 +0.34 -4.2
13NE 35 +0.412 +0.336 +0.076 +14.4 0 / 1 -3.5 2 -4.3 +0.26 +3.5
14NYJ 30 -0.181 -0.159 -0.022 -5.4 0 / 0 +0.0 3 -4.9 -0.10 -8.2
15MIA 42 +0.316 +0.300 +0.016 +13.3 0 / 1 -5.4 2 -6.6 +0.31 +6.4
16CHI 28 +0.042 +0.093 -0.051 +1.2 2 / 0 -9.6 1 -0.9 -0.31 +1.0
18NE 33 +0.330 +0.256 +0.074 +10.9 1 / 0 -3.5 2 -4.1 +0.23 +0.9
19MIA 46 -0.253 -0.257 +0.004 -11.6 2 / 1 -18.6 7 -15.9 -0.24 +5.5
20CIN 43 -0.025 -0.041 +0.016 -1.1 1 / 0 -2.5 1 -1.3 -0.00 +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: backtests/nfl_game_quality/FINDINGS.md.