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.

Deshaun Watson — 2026 Every split →

Adj EPA / dropback
-0.023
Raw EPA / dropback
+0.008
Dropbacks
236
Turnover EPA
-17.2
WPA
+0.60
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
1JAX 27 -0.145 -0.206 +0.061 -3.9 1 / 0 -6.4 5 -8.6 -0.22 +10.3
2TB 32 +0.349 +0.324 +0.024 +11.2 0 / 0 +0.0 2 -2.2 +0.43 +6.4
3CAR 33 +0.036 +0.077 -0.041 +1.2 0 / 0 +0.0 2 -3.8 +0.23 -13.7
4PIT 35 +0.282 +0.262 +0.019 +9.9 1 / 0 -2.4 2 -2.0 +0.27 +3.8
5NYJ 41 -0.431 -0.304 -0.126 -17.7 0 / 1 -3.1 8 -12.0 -0.49 -15.6
6BAL 31 -0.255 -0.222 -0.033 -7.9 0 / 0 +0.0 5 -7.4 +0.00 -0.8
7TEN 37 +0.050 +0.124 -0.075 +1.8 1 / 0 -5.3 1 -0.9 +0.37 +6.9
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.