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.

Teddy Bridgewater — 2021

Adj EPA / dropback
+0.098
Raw EPA / dropback
+0.124
Dropbacks
460
Turnover EPA
-26.7
WPA
+0.64
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
1NYG 38 +0.623 +0.614 +0.008 +23.7 0 / 0 +0.0 2 -2.7 +0.67 +15.4
2JAX 37 +0.110 +0.242 -0.132 +4.1 0 / 0 +0.0 3 -4.3 +0.19 +14.7
3NYJ 27 +0.339 +0.442 -0.103 +9.2 0 / 0 +0.0 2 -3.6 +0.06 +12.7
4BAL 18 -0.409 -0.389 -0.020 -7.4 0 / 0 +0.0 2 -4.1 -0.27 -17.7
5PIT 41 +0.235 +0.177 +0.057 +9.6 1 / 0 -2.7 2 -3.8 -0.09 +6.3
6LV 54 +0.006 +0.072 -0.066 +0.3 3 / 0 -7.0 5 -4.8 -0.13 +10.1
7CLE 35 +0.194 +0.181 +0.013 +6.8 1 / 0 -3.4 2 -2.9 +0.15 +5.0
8WAS 30 +0.116 +0.120 -0.004 +3.5 0 / 0 +0.0 4 -4.6 +0.26 +5.2
9DAL 33 +0.364 +0.274 +0.089 +12.0 0 / 0 +0.0 4 -6.3 +0.06 +7.4
10PHI 37 -0.168 -0.142 -0.026 -6.2 0 / 0 +0.0 1 -1.2 -0.03 -4.5
12LAC 18 +0.427 +0.431 -0.003 +7.7 0 / 0 +0.0 0 +0.0 +0.19 -4.3
13KC 42 -0.292 -0.260 -0.032 -12.3 2 / 0 -13.6 1 -2.5 -0.31 -9.2
14DET 26 +0.204 +0.342 -0.139 +5.3 0 / 0 +0.0 1 -1.0 +0.10 +4.5
15CIN 24 -0.466 -0.446 -0.020 -11.2 0 / 0 +0.0 2 -4.0 -0.19 -10.2
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.