| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 11.55 | 191209022_OAK_MIN |
| Christy Mathewson | SFN | 5.71 | 191209022_SFN_ATL |
| Nap Rucker | LAN | 4.16 | 191209022_LAN_PHI |
| Slim Sallee | SLN | 3.21 | 191209040_SLN_CIN |
| Claude Hendrix | PIT | 2.94 | 191209032_CHN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Russ Ford | NYA | -3.89 | 191209021_BOS_NYA |
| George Kahler | CLE | -1.35 | 191209021_BAL_CLE |
| Ed Willett | DET | -1.17 | 191209040_DET_CHA |
| Eddie Cicotte | CHA | -1.04 | 191209031_DET_CHA |
| Tom Hughes | MIN | -0.58 | 191209021_OAK_MIN |
Based on accumulated WAA for this season up to 1912-09-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.01 | Walter Johnson | 314.7 | MIN |
| +002+ | 10.9 | Christy Mathewson | 255 | SFN |
| +003+ | 9.39 | Nap Rucker | 242.3 | LAN |
| +004+ | 9.24 | Slim Sallee | 271.7 | SLN |
| +006+ | 8.83 | Rube Marquard | 257.7 | SFN |
| +007+ | 8.63 | Claude Hendrix | 256.7 | PIT |
| +008+ | 7.97 | Smoky Joe Wood | 294 | BOS |
| +010+ | 6.94 | Art Fromme | 236.7 | CIN |
| +012+ | 6.8 | Rube Benton | 255.7 | CIN |
| +013+ | 6.71 | George Suggs | 243.3 | CIN |
| +016+ | 6.15 | Pete Alexander | 259 | PHI |
| +017+ | 6.13 | Marty O'Toole | 236 | PIT |
| +018+ | 5.96 | Ed Walsh | 335 | CHA |
| +019+ | 5.85 | Larry Cheney | 247 | CHN |
| +020+ | 5.75 | Lew Richie | 206.7 | CHN |
| +021+ | 5.47 | Howie Camnitz | 233.3 | PIT |
| +022+ | 5.46 | Jeff Tesreau | 168.7 | SFN |
| +023+ | 5.2 | Eppa Rixey | 128.7 | PHI |
| +024+ | 4.96 | Jimmy Lavender | 223.3 | CHN |
| +036+ | 3.59 | Ray Collins | 155.3 | BOS |
| +037+ | 3.36 | Hooks Wiltse | 127.7 | SFN |
| +040+ | 3.25 | Babe Adams | 143.3 | PIT |
| +044+ | 3.07 | Eddie Plank | 210.7 | OAK |
| +057+ | 2.48 | Rube Geyer | 145.7 | SLN |
| +058+ | 2.46 | Vean Gregg | 233 | CLE |
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