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.

Aaron Rodgers — 2026 Every split →

Adj EPA / dropback
-0.080
Raw EPA / dropback
-0.091
Dropbacks
283
Turnover EPA
-24.3
WPA
-0.62
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
1ATL 42 -0.174 -0.187 +0.013 -7.3 0 / 0 +0.0 2 -3.0 -0.34 +1.2
2NE 43 -0.476 -0.498 +0.022 -20.5 1 / 1 -12.1 4 -15.0 -0.36 -6.4
3CIN 35 +0.204 +0.245 -0.041 +7.1 1 / 0 -3.1 2 -3.0 +0.17 -2.2
4CLE 46 +0.120 +0.053 +0.068 +5.5 2 / 0 -3.7 5 -9.0 -0.04 -6.4
5IND 32 +0.134 +0.133 +0.001 +4.3 0 / 0 +0.0 1 -2.0 +0.08 +2.5
6TB 52 -0.259 -0.264 +0.005 -13.5 1 / 0 -5.3 5 -8.0 -0.22 +5.6
7NO 33 +0.054 +0.063 -0.008 +1.8 0 / 0 +0.0 3 -4.3 +0.10 -2.9
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 2026-10-28 11:05 UTC, from nflverse. Write-up: backtests/nfl_game_quality/FINDINGS.md.