| Starter | Tm | Tier | Game |
|---|---|---|---|
| King Cole | PIT | -1.87 | 191208262_ATL_PIT |
| George McConnell | NYA | -1.84 | 191208271_CLE_NYA |
| Mack Allison | BAL | -1.82 | 191208261_BAL_MIN |
| Carl Cashion | MIN | -1.42 | 191208270_BAL_MIN |
| George Kahler | CLE | -1.16 | 191208282_CLE_NYA |
Based on accumulated WAA for this season up to 1912-08-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 14.36 | Walter Johnson | 304.7 | MIN |
| +002+ | 10.38 | Christy Mathewson | 244 | SFN |
| +003+ | 9.53 | Nap Rucker | 229.7 | LAN |
| +005+ | 8.57 | Rube Marquard | 242.7 | SFN |
| +006+ | 8.12 | Claude Hendrix | 247.7 | PIT |
| +007+ | 7.79 | Slim Sallee | 253.7 | SLN |
| +008+ | 7.49 | Smoky Joe Wood | 285 | BOS |
| +010+ | 6.74 | Rube Benton | 237.7 | CIN |
| +011+ | 6.64 | Ed Walsh | 321 | CHA |
| +012+ | 6.62 | Art Fromme | 223 | CIN |
| +013+ | 6.41 | Marty O'Toole | 222 | PIT |
| +017+ | 6.26 | Pete Alexander | 246 | PHI |
| +018+ | 5.81 | George Suggs | 223.3 | CIN |
| +019+ | 5.5 | Lew Richie | 194.7 | CHN |
| +020+ | 5.31 | Jimmy Lavender | 206.3 | CHN |
| +021+ | 5.18 | Howie Camnitz | 224.7 | PIT |
| +022+ | 5.09 | Larry Cheney | 229 | CHN |
| +023+ | 4.82 | Jeff Tesreau | 150.7 | SFN |
| +031+ | 3.83 | Hooks Wiltse | 124.3 | SFN |
| +033+ | 3.82 | Red Ames | 137.7 | SFN |
| +034+ | 3.8 | Eddie Plank | 200.7 | OAK |
| +036+ | 3.58 | Eppa Rixey | 106.7 | PHI |
| +045+ | 3.05 | Bert Humphries | 158 | CIN |
| +046+ | 3.01 | Babe Adams | 127.3 | PIT |
| +050+ | 2.74 | Ray Collins | 137.3 | BOS |
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