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.

Jared Goff — 2023

Adj EPA / dropback
+0.143
Raw EPA / dropback
+0.144
Dropbacks
754
Turnover EPA
-66.8
WPA
+4.11
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
1KC 35 +0.251 +0.187 +0.063 +8.8 0 / 0 +0.0 1 -1.3 -0.00 -0.1
2SEA 37 +0.174 +0.220 -0.046 +6.4 1 / 0 -8.2 2 -2.4 +0.02 +13.1
3ATL 33 +0.046 +0.082 -0.037 +1.5 1 / 0 -2.8 0 +0.0 +0.14 +3.3
4GB 30 +0.075 +0.082 -0.007 +2.2 1 / 0 -4.0 2 -3.6 +0.13 +3.7
5CAR 30 +0.195 +0.192 +0.002 +5.8 0 / 0 +0.0 2 -4.9 +0.08 +3.1
6TB 47 +0.363 +0.381 -0.019 +17.0 0 / 0 +0.0 3 -3.3 +0.64 +3.0
7BAL 59 -0.155 -0.226 +0.070 -9.2 1 / 0 -2.6 5 -8.0 -0.08 -1.8
8LV 37 +0.036 +0.065 -0.029 +1.3 1 / 0 -11.2 0 +0.0 -0.05 +1.7
10LAC 33 +0.447 +0.449 -0.002 +14.8 0 / 0 +0.0 0 +0.0 +0.90 +1.3
11CHI 38 -0.086 -0.029 -0.057 -3.3 3 / 0 -14.0 2 -4.2 +0.36 +0.6
12GB 48 -0.106 -0.091 -0.014 -5.1 0 / 2 -11.0 3 -11.5 -0.10 +1.1
13NO 27 +0.339 +0.277 +0.062 +9.2 0 / 0 +0.0 1 -1.9 +0.37 -1.6
14CHI 39 -0.223 -0.162 -0.060 -8.7 2 / 0 -2.1 4 -6.0 +0.10 -10.7
15DEN 36 +0.412 +0.423 -0.011 +14.8 0 / 0 +0.0 2 -4.7 +0.14 +8.1
16MIN 41 +0.342 +0.348 -0.006 +14.0 0 / 0 +0.0 1 -1.6 +0.57 +1.6
17DAL 33 -0.015 -0.048 +0.033 -0.5 2 / 0 -11.0 1 -2.4 +0.03 -7.1
18MIN 33 +0.323 +0.330 -0.007 +10.6 0 / 0 +0.0 1 -1.7 +0.32 +3.2
19LA 30 +0.362 +0.374 -0.011 +10.9 0 / 0 +0.0 3 -4.7 +0.36 +10.8
20TB 45 +0.157 +0.180 -0.024 +7.0 0 / 0 +0.0 2 -3.5 +0.29 -0.8
21SF 43 +0.236 +0.163 +0.073 +10.2 0 / 0 +0.0 2 -2.8 -0.11 -1.5
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.