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.

Kirk Cousins — 2025

Adj EPA / dropback
-0.034
Raw EPA / dropback
-0.007
Dropbacks
281
Turnover EPA
-25.8
WPA
+0.33
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
3CAR 7 -0.532 -0.435 -0.097 -3.7 0 / 0 +0.0 0 +0.0 +0.00 -8.3
8MIA 32 -0.235 -0.183 -0.051 -7.5 0 / 0 +0.0 1 -1.4 -0.02 +2.5
11CAR 14 -0.350 -0.271 -0.079 -4.9 0 / 0 +0.0 0 +0.0 -0.39 -27.5
12NO 25 -0.138 -0.159 +0.020 -3.5 1 / 0 -8.5 3 -5.7 -0.17 +7.2
13NYJ 35 +0.059 +0.167 -0.108 +2.1 0 / 0 +0.0 2 -4.3 +0.13 -0.8
14SEA 31 -0.435 -0.496 +0.061 -13.5 2 / 0 -9.0 1 -1.8 -0.15 -12.8
15TB 46 +0.333 +0.366 -0.033 +15.3 0 / 0 +0.0 1 -1.2 +0.60 +7.7
16ARI 36 +0.156 +0.225 -0.069 +5.6 1 / 0 -2.7 1 -1.8 +0.20 -6.9
17LA 20 +0.260 +0.246 +0.013 +5.2 0 / 0 +0.0 0 +0.0 +0.21 +0.5
18NO 35 -0.137 -0.158 +0.020 -4.8 1 / 0 -5.6 4 -6.5 -0.08 -6.6
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.