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.

Anthony Richardson — 2024

Adj EPA / dropback
-0.130
Raw EPA / dropback
-0.141
Dropbacks
277
Turnover EPA
-55.0
WPA
-0.90
WeekOpp DropbacksAdj EPA/dbRaw EPA/dbScheduleTotal adj EPA INT / FLTurnover EPASacksSack EPAWPACPOE
1HOU 21 -0.104 -0.144 +0.040 -2.2 1 / 0 -3.9 2 -4.6 +0.05 -14.2
2GB 34 -0.210 -0.236 +0.026 -7.1 3 / 0 -8.9 1 -1.6 -0.25 -8.1
3CHI 21 -0.501 -0.490 -0.011 -10.5 2 / 0 -10.0 1 -2.1 -0.15 -9.8
4PIT 4 +1.093 +1.069 +0.023 +4.4 0 / 0 +0.0 0 +0.0 +0.12 +12.1
7MIA 24 -0.220 -0.222 +0.002 -5.3 0 / 0 +0.0 0 +0.0 -0.10 -18.7
8HOU 36 -0.192 -0.224 +0.032 -6.9 1 / 1 -5.6 5 -5.8 -0.40 -24.8
11NYJ 33 +0.305 +0.263 +0.041 +10.1 0 / 1 -6.3 2 -8.5 +0.35 +7.3
12DET 28 -0.095 -0.093 -0.002 -2.7 0 / 0 +0.0 0 +0.0 +0.07 -14.4
13NE 24 -0.094 -0.059 -0.035 -2.3 2 / 0 -7.3 0 +0.0 -0.08 -2.8
15DEN 40 -0.388 -0.394 +0.006 -15.5 2 / 0 -7.4 2 -2.2 -0.48 -16.1
16TEN 12 +0.180 +0.202 -0.023 +2.2 1 / 0 -5.5 1 -2.0 -0.02 -6.4
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.