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.

Geno Smith — 2025

Adj EPA / dropback
-0.136
Raw EPA / dropback
-0.146
Dropbacks
503
Turnover EPA
-93.3
WPA
-1.98
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
1NE 37 +0.425 +0.385 +0.040 +15.7 1 / 0 -3.5 4 -5.8 +0.27 +9.6
2LAC 46 -0.439 -0.501 +0.062 -20.2 3 / 0 -10.9 3 -7.7 -0.43 -15.3
3WAS 35 +0.274 +0.350 -0.076 +9.6 0 / 0 +0.0 5 -6.8 +0.02 +11.7
4CHI 20 -0.490 -0.480 -0.010 -9.8 3 / 0 -16.1 0 +0.0 -0.01 -3.6
5IND 40 -0.306 -0.273 -0.033 -12.2 2 / 0 -12.0 4 -8.4 -0.05 -0.3
6TEN 25 -0.045 +0.023 -0.068 -1.1 1 / 0 -5.5 2 -3.7 +0.02 +2.8
7KC 17 -0.574 -0.571 -0.003 -9.8 0 / 0 +0.0 1 -1.7 -0.07 -8.0
9JAX 42 +0.294 +0.271 +0.023 +12.4 1 / 0 -5.8 2 -1.0 -0.18 +1.5
10DEN 32 -0.421 -0.510 +0.089 -13.5 1 / 0 -6.2 6 -10.9 -0.52 -6.7
11DAL 46 -0.431 -0.309 -0.122 -19.8 1 / 0 -5.2 4 -9.3 -0.26 -3.2
12CLE 54 -0.321 -0.375 +0.054 -17.3 0 / 1 -5.2 10 -20.7 -0.45 +0.5
13LAC 28 -0.004 -0.076 +0.072 -0.1 1 / 0 -3.4 5 -10.8 -0.08 +12.2
14DEN 24 -0.012 -0.112 +0.100 -0.3 0 / 0 +0.0 3 -4.9 -0.12 +5.5
16HOU 26 +0.177 +0.064 +0.113 +4.6 1 / 0 -8.0 3 -4.6 +0.03 +4.9
17NYG 31 -0.210 -0.155 -0.055 -6.5 2 / 0 -11.7 3 -5.5 -0.16 +7.5
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.