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.

Dak Prescott — 2025

Adj EPA / dropback
+0.179
Raw EPA / dropback
+0.179
Dropbacks
631
Turnover EPA
-47.7
WPA
+4.41
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
1PHI 33 +0.123 +0.036 +0.087 +4.1 0 / 0 +0.0 0 +0.0 -0.05 +0.2
2NYG 55 +0.138 +0.184 -0.046 +7.6 1 / 0 -3.9 3 -4.7 +0.71 +2.1
3CHI 43 -0.047 -0.044 -0.003 -2.0 2 / 0 -9.9 2 -3.8 -0.00 +10.9
4GB 41 +0.566 +0.547 +0.019 +23.2 0 / 0 +0.0 1 -1.0 +1.44 +13.7
5NYJ 30 +0.293 +0.395 -0.102 +8.8 0 / 0 +0.0 1 -0.8 +0.29 -0.6
6CAR 34 +0.450 +0.522 -0.072 +15.3 0 / 0 +0.0 0 +0.0 +0.66 +7.1
7WAS 31 +0.154 +0.232 -0.078 +4.8 0 / 0 +0.0 1 -0.4 +0.25 +0.4
8DEN 33 -0.030 -0.133 +0.103 -1.0 2 / 0 -8.1 2 -3.5 -0.09 -3.0
9ARI 43 -0.198 -0.122 -0.076 -8.5 1 / 0 +0.2 5 -8.2 -0.25 -0.5
11LV 34 +0.223 +0.252 -0.029 +7.6 0 / 1 -5.8 1 -5.8 +0.30 +8.7
12PHI 36 +0.207 +0.117 +0.090 +7.5 1 / 0 -6.0 1 -2.0 +0.11 +1.5
13KC 40 +0.412 +0.390 +0.022 +16.5 1 / 0 -4.6 0 +0.0 +0.52 +4.8
14DET 53 +0.043 +0.019 +0.024 +2.3 2 / 0 -9.7 5 -9.0 -0.05 +1.2
15MIN 40 +0.124 +0.024 +0.100 +5.0 0 / 0 +0.0 2 -4.2 +0.03 -4.1
16LAC 31 +0.491 +0.412 +0.079 +15.2 0 / 0 +0.0 1 -0.2 +0.39 +4.0
17WAS 43 +0.195 +0.273 -0.078 +8.4 0 / 0 +0.0 6 -4.1 +0.22 -11.0
18NYG 11 -0.151 -0.095 -0.056 -1.7 0 / 0 +0.0 0 +0.0 -0.06 -4.4
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.