When does each position peak, and how fast does it fall off? Every player's per-snap production is scaled to his own best season, so the curve measures aging as a shape — not which stars happened to be young. Snap-count era, 2012+.
| Position | Peak age | Drop by +5 yrs | Sample |
|---|---|---|---|
| Defensive Backs | 21 | −9.1 (by 26) | 3,065 |
| Running Backs | 21 | −8.3 (by 26) | 1,079 |
| Quarterbacks | 24 | −4.7 (by 29) | 516 |
| Wide Receivers | 25 | −9.7 (by 30) | 1,804 |
| Tight Ends | 25 | −8.6 (by 30) | 1,093 |
| Edge Rushers | 25 | −4.7 (by 30) | 1,974 |
| Interior D-Line | 25 | −5.5 (by 30) | 1,403 |
| Linebackers | 32 | −0 (by 32) | 1,523 |
Drop = points of peak-relative index lost five years after the peak age (100 = a player's own best season).