| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Marquard | SFN | 3.24 | 191208180_SFN_SLN |
| Slim Sallee | SLN | 2.63 | 191208190_SFN_SLN |
| Marty O'Toole | PIT | 2.45 | 191208202_LAN_PIT |
| Smoky Joe Wood | BOS | 2.37 | 191208200_DET_BOS |
| Pete Alexander | PHI | 1.75 | 191208201_PHI_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Russ Ford | NYA | -2.41 | 191208201_BAL_NYA |
| Mack Allison | BAL | -1.87 | 191208201_BAL_NYA |
| Carl Cashion | MIN | -1.75 | 191208202_CLE_MIN |
| Eddie Cicotte | CHA | -1.22 | 191208201_CHA_OAK |
| Ed Willett | DET | -0.97 | 191208190_DET_BOS |
Based on accumulated WAA for this season up to 1912-08-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.73 | Walter Johnson | 284 | MIN |
| +002+ | 9.6 | Christy Mathewson | 227 | SFN |
| +003+ | 9.05 | Rube Marquard | 225.7 | SFN |
| +004+ | 8.63 | Claude Hendrix | 234.7 | PIT |
| +006+ | 8.53 | Nap Rucker | 212.7 | LAN |
| +007+ | 7.57 | Slim Sallee | 237.7 | SLN |
| +008+ | 6.97 | Smoky Joe Wood | 267 | BOS |
| +010+ | 6.2 | Marty O'Toole | 215 | PIT |
| +011+ | 6.09 | Ed Walsh | 303.3 | CHA |
| +015+ | 5.51 | Rube Benton | 219.7 | CIN |
| +016+ | 5.44 | Jimmy Lavender | 189.3 | CHN |
| +017+ | 5.43 | Pete Alexander | 237 | PHI |
| +018+ | 5.37 | George Suggs | 216 | CIN |
| +019+ | 5.27 | Art Fromme | 206 | CIN |
| +020+ | 4.68 | Lew Richie | 185.7 | CHN |
| +024+ | 4.36 | Jeff Tesreau | 134.7 | SFN |
| +026+ | 4.28 | Larry Cheney | 211 | CHN |
| +027+ | 4 | Howie Camnitz | 204.7 | PIT |
| +033+ | 3.53 | Hank Robinson | 123.7 | PIT |
| +034+ | 3.46 | Hooks Wiltse | 118.3 | SFN |
| +039+ | 3.2 | Eddie Plank | 191.7 | OAK |
| +043+ | 2.93 | Eddie Stack | 99 | LAN |
| +045+ | 2.89 | Bert Humphries | 149.3 | CIN |
| +048+ | 2.77 | Vean Gregg | 203 | CLE |
| +049+ | 2.74 | Eppa Rixey | 97.7 | PHI |
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