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 | −11.1 (by 26) | 2,865 |
| Running Backs | 21 | −10 (by 26) | 1,034 |
| Linebackers | 23 | −8.4 (by 28) | 1,405 |
| Quarterbacks | 24 | −5.9 (by 29) | 472 |
| Wide Receivers | 25 | −9.4 (by 30) | 1,703 |
| Tight Ends | 25 | −9 (by 30) | 1,030 |
| Edge Rushers | 25 | −4.8 (by 30) | 1,927 |
| Interior D-Line | 25 | −4.6 (by 30) | 1,291 |
Drop = points of peak-relative index lost five years after the peak age (100 = a player's own best season).