P · 5 seasons · 1908 – 1912 · B/T: L/L
Across 5 seasons from 1908 to 1912, Al Mattern ranks 8759th of 11,481 pitchers in career roto value (7.2 wins and 50.8 strikeouts per season). The peak came in 1909, +1.5, 58th that season and 13119th of 51,303 player-seasons on record. The value came from wins (+1.5) and strikeouts (+1.0). It leaked back out through WHIP (-5.9) and ERA (-4.3).
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1908 | BSN | 5 | -2.63 | #404 | #103,252 |
| 1909 | BSN | 47 | -2.33 | #437 | #90,255 |
| 1910 | BSN | 51 | -2.64 | #606 | #103,624 |
| 1911 | BSN | 33 | -2.39 | #614 | #94,712 |
| 1912★ | BSN | 2 | -2.21 | #537 | #78,545 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1908 | BSN | 5 | -1.96 | #117 | #31,085 |
| 1909★ | BSN | 47 | 1.48 | #58 | #13,119 |
| 1910 | BSN | 51 | 1.30 | #62 | #13,672 |
| 1911 | BSN | 33 | -4.88 | #256 | #50,896 |
| 1912 | BSN | 2 | -2.19 | #197 | #34,438 |
★ Best season by Z