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.
Mitchell Trubisky — 2024
Adj EPA / dropback
+0.353
Raw EPA / dropback
+0.374
Dropbacks
26
Turnover EPA
+0.0
WPA
+0.09
| Week | Opp | Dropbacks | Adj EPA/db | Raw EPA/db | Schedule | Total adj EPA | INT / FL | Turnover EPA | Sacks | Sack EPA | WPA | CPOE |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | JAX | 1 | -1.084 | -1.034 | -0.050 | -1.1 | 0 / 0 | +0.0 | 0 | +0.0 | -0.00 | +15.3 |
| 4 | BAL | 2 | -0.286 | -0.372 | +0.085 | -0.6 | 0 / 0 | +0.0 | 0 | +0.0 | -0.00 | -11.8 |
| 13 | SF | 1 | -0.105 | -0.140 | +0.035 | -0.1 | 0 / 0 | +0.0 | 0 | +0.0 | +0.00 | +19.7 |
| 17 | NYJ | 1 | +7.144 | +7.094 | +0.050 | +7.1 | 0 / 0 | +0.0 | 0 | +0.0 | +0.00 | +11.3 |
| 18 | NE | 21 | +0.181 | +0.216 | -0.036 | +3.8 | 0 / 0 | +0.0 | 0 | +0.0 | +0.09 | +6.1 |
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:
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.