Quarterbacks
EPA and WPA per dropback. A dropback is a pass attempt, sack or scramble.
Efficiency vs. leverage
Each dot is a qualified QB. Right = more EPA per dropback; up = more WPA per dropback. Dashed lines: league average on all dropbacks.
Leaderboard
Click a column to sort. Ranks are among qualified QBs.
How these are computed
- Dropbacks include plays wiped out by a penalty (nflfastR
pass == 1). Kneels, spikes and two-point tries are excluded. - EPA is
qb_epa, which stops at a receiver’s lost fumble. Total EPA (all) adds the QB’s designed runs. - Qualified: at least 12 dropbacks per game the team played (204 over 17 games).
- Completions, attempts, passing yards, TDs and interceptions, and rushing yards and TDs, are the official box-score totals (nflverse’s player stats): rushing counts scrambles and kneel-downs. INT is the count; INT % (further right) is interceptions per dropback. They count every game, including the few our quality checks flag (marked *), where they can be slightly off; for example, Drew Brees 2011 shows 5,535 passing yards here against the official 5,476 because one game’s play-by-play has errors.
- CPOE and aDOT need air yards, so start in 2006. ANY/A = (yards + 20×TD − 45×INT − sack yards) / (attempts + sacks).
- Total WPA (nflfastR) is the same total from nflfastR’s win probability with the line (
vegas_wpa), for comparison. Over the same games the two agree closely on season totals (r 0.92–0.99 by season). - Stabilised (the Numbers switch): each rate pulled toward what similar players usually do, by an amount set by how much one season of plays can tell apart (fitted on 1999–2017 by splitting seasons in half; on 2018–2025 it predicted the other half of a season 25–56% better than the raw rate). The range after each number is a 90% interval; after the rank, the range of ranks it could plausibly hold. The prior rises with playing time: starters are better than backups.
- All numbers are descriptive: they don’t adjust for teammates, opponents or play-calling (except the teams page’s adjusted columns).
- EPA is nflfastR’s expected points added. WPA is win probability added from our own model (the registered WP model behind the 4th-down tool): per play in WP points, totals in wins. A touchdown earns the score plus the expected try; tries, kickoffs and returns earn their own WPA. For 1999–2025 these are the production model’s in-sample values.
- ± is a game-clustered standard error.
- * Some of this season’s games have play-by-play errors in the source (for example, every 2001 Jaguars home game is scored 21–3), so our WPA totals skip those games; rates use the games that remain.