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.

Jacoby Brissett — 2025

Adj EPA / dropback
-0.010
Raw EPA / dropback
-0.007
Dropbacks
530
Turnover EPA
-60.3
WPA
-0.82
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
5TEN 1 -0.845 -0.779 -0.066 -0.8 0 / 0 +0.0 0 +0.0 -0.00 -67.0
6IND 46 +0.112 +0.136 -0.024 +5.2 1 / 0 -5.5 2 -2.4 -0.01 +4.6
7GB 42 +0.031 +0.025 +0.006 +1.3 0 / 1 -5.9 6 -12.4 -0.09 +4.7
9DAL 36 +0.083 +0.195 -0.112 +3.0 0 / 0 +0.0 5 -8.6 +0.28 +7.4
10SEA 50 -0.169 -0.237 +0.068 -8.5 0 / 2 -15.9 5 -21.0 -0.19 -9.9
11SF 58 +0.122 +0.159 -0.037 +7.1 2 / 0 -10.3 0 +0.0 -0.04 +12.4
12JAX 55 -0.141 -0.155 +0.014 -7.8 0 / 0 +0.0 6 -10.4 -0.82 +3.1
13TB 41 +0.093 +0.133 -0.039 +3.8 1 / 0 -4.9 2 -2.3 -0.16 +11.1
14LA 47 -0.064 -0.070 +0.006 -3.0 1 / 0 -3.6 3 -3.4 +0.10 -8.4
15HOU 43 +0.069 -0.042 +0.110 +3.0 1 / 0 -4.6 2 -4.0 +0.00 +1.2
16ATL 33 -0.074 -0.073 -0.002 -2.5 1 / 0 -3.0 2 -3.6 -0.04 -13.6
17CIN 41 -0.083 -0.019 -0.064 -3.4 0 / 0 +0.0 4 -5.5 +0.02 -5.7
18LA 37 -0.074 -0.083 +0.009 -2.8 1 / 1 -6.7 6 -12.9 +0.11 +13.3
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.