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.

Baker Mayfield — 2022

Adj EPA / dropback
-0.141
Raw EPA / dropback
-0.138
Dropbacks
371
Turnover EPA
-34.9
WPA
-1.39
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
1CLE 31 -0.014 -0.052 +0.038 -0.4 1 / 0 -2.5 4 -7.5 -0.09 -9.2
2NYG 31 -0.261 -0.248 -0.012 -8.1 0 / 0 +0.0 2 -3.0 -0.37 -15.7
3NO 28 -0.101 -0.171 +0.070 -2.8 0 / 0 +0.0 3 -3.5 -0.18 -19.4
4ARI 39 -0.364 -0.341 -0.023 -14.2 2 / 0 -9.5 2 -3.8 -0.44 -10.2
5SF 40 -0.239 -0.271 +0.031 -9.6 1 / 0 -7.4 4 -7.8 -0.21 -8.8
9CIN 20 +0.608 +0.592 +0.016 +12.2 0 / 0 +0.0 0 +0.0 -0.00 +2.9
11BAL 37 -0.432 -0.386 -0.046 -16.0 2 / 0 -6.6 4 -7.5 -0.41 -3.0
14LV 38 -0.026 +0.052 -0.078 -1.0 0 / 0 +0.0 4 -4.2 +0.44 -6.2
15GB 26 -0.117 -0.132 +0.016 -3.0 1 / 0 -1.8 5 -7.0 -0.13 -7.6
16DEN 28 +0.537 +0.498 +0.040 +15.0 0 / 0 +0.0 0 +0.0 +0.21 +8.8
17LAC 22 -0.518 -0.526 +0.008 -11.4 0 / 1 -5.2 3 -9.3 -0.18 -3.5
18SEA 31 -0.419 -0.370 -0.048 -13.0 1 / 0 -1.8 5 -8.5 -0.02 -10.3
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.