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.

Daniel Jones — 2022

Adj EPA / dropback
+0.035
Raw EPA / dropback
+0.035
Dropbacks
584
Turnover EPA
-33.4
WPA
+0.86
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
1TEN 27 -0.259 -0.253 -0.006 -7.0 1 / 1 -10.4 5 -10.9 -0.02 +13.4
2CAR 37 -0.076 -0.072 -0.004 -2.8 0 / 0 +0.0 3 -4.5 -0.01 -1.6
3DAL 42 -0.192 -0.278 +0.086 -8.1 1 / 0 -2.0 5 -6.1 -0.42 -6.6
4CHI 14 -0.192 -0.140 -0.052 -2.7 0 / 0 +0.0 1 -1.8 -0.03 -1.2
5GB 28 +0.510 +0.478 +0.032 +14.3 0 / 0 +0.0 1 -1.1 +0.46 +11.3
6BAL 31 +0.298 +0.329 -0.030 +9.2 0 / 1 -0.3 4 -4.3 +0.33 +9.9
7JAX 31 +0.003 +0.060 -0.057 +0.1 0 / 0 +0.0 1 -1.1 +0.05 -2.7
8SEA 36 -0.038 +0.003 -0.041 -1.4 0 / 0 +0.0 5 -2.9 +0.07 -12.8
10HOU 20 +0.588 +0.594 -0.006 +11.8 0 / 0 +0.0 3 -3.8 +0.30 +3.8
11DET 47 -0.044 +0.054 -0.097 -2.0 2 / 0 -9.5 2 -2.6 -0.13 +1.2
12DAL 35 -0.037 -0.123 +0.087 -1.3 0 / 0 +0.0 3 -4.5 -0.16 +4.5
13WAS 33 -0.076 -0.069 -0.007 -2.5 0 / 0 +0.0 4 -7.1 +0.01 +15.7
14PHI 31 -0.116 -0.164 +0.047 -3.6 0 / 0 +0.0 4 -4.8 -0.12 -1.0
15WAS 32 +0.029 +0.036 -0.006 +0.9 0 / 0 +0.0 0 +0.0 +0.03 -2.8
16MIN 46 +0.067 +0.074 -0.007 +3.1 1 / 0 -5.6 3 -3.6 -0.01 +2.7
17IND 24 +0.494 +0.492 +0.002 +11.9 0 / 0 +0.0 0 +0.0 +0.14 +12.2
19MIN 38 +0.359 +0.358 +0.001 +13.7 0 / 0 +0.0 3 -4.4 +0.49 -1.3
20PHI 32 -0.415 -0.453 +0.038 -13.3 1 / 0 -5.6 5 -9.2 -0.13 -10.5
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.