| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 10.23 | 191207130_CHA_MIN |
| Christy Mathewson | SFN | 5.34 | 191207130_SFN_SLN |
| Ed Walsh | CHA | 3.87 | 191207122_CHA_OAK |
| Nap Rucker | LAN | 3.01 | 191207131_LAN_PIT |
| Marty O'Toole | PIT | 2.29 | 191207132_LAN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| George McConnell | NYA | -3.08 | 191207131_BAL_NYA |
| Earl Hamilton | BAL | -1.84 | 191207120_BAL_NYA |
| Elmer Knetzer | LAN | -1.68 | 191207132_LAN_PIT |
| Bill Steele | SLN | -1.53 | 191207110_ATL_SLN |
| Hippo Vaughn | MIN | -1.31 | 191207120_CLE_MIN |
Based on accumulated WAA for this season up to 1912-07-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.93 | Walter Johnson | 199 | MIN |
| +002+ | 8.84 | Rube Marquard | 166.3 | SFN |
| +004+ | 6.91 | Marty O'Toole | 159 | PIT |
| +005+ | 6.77 | Christy Mathewson | 155.7 | SFN |
| +006+ | 6.53 | Nap Rucker | 149.7 | LAN |
| +007+ | 5.72 | Claude Hendrix | 155.3 | PIT |
| +010+ | 5.13 | Jimmy Lavender | 122 | CHN |
| +011+ | 5.07 | Larry Cheney | 172 | CHN |
| +012+ | 5.05 | Ed Walsh | 205.7 | CHA |
| +013+ | 4.75 | Smoky Joe Wood | 193.3 | BOS |
| +015+ | 4.62 | George Suggs | 141.3 | CIN |
| +016+ | 4.59 | Rube Benton | 156.3 | CIN |
| +018+ | 4.24 | Lew Richie | 112.7 | CHN |
| +019+ | 3.74 | Joe Benz | 136.7 | CHA |
| +026+ | 3.09 | Pete Alexander | 148.7 | PHI |
| +028+ | 2.77 | Ad Brennan | 132.7 | PHI |
| +032+ | 2.69 | Bert Humphries | 99.7 | CIN |
| +033+ | 2.66 | Red Ames | 97.7 | SFN |
| +035+ | 2.59 | Vean Gregg | 130.3 | CLE |
| +036+ | 2.52 | Hooks Wiltse | 83 | SFN |
| +039+ | 2.33 | Hub Perdue | 130.3 | ATL |
| +040+ | 2.32 | Eddie Plank | 133.7 | OAK |
| +043+ | 2.23 | Chief Bender | 113.3 | OAK |
| +044+ | 2.22 | Mordecai Brown | 78.3 | CHN |
| +046+ | 2.07 | Howie Camnitz | 148 | PIT |
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