| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 11.58 | 191207032_NYA_MIN |
| Rube Marquard | SFN | 6.55 | 191207031_LAN_SFN |
| Ed Walsh | CHA | 3.94 | 191207050_DET_CHA |
| Nap Rucker | LAN | 2.61 | 191207031_LAN_SFN |
| Smoky Joe Wood | BOS | 2.32 | 191207041_BOS_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Quinn | NYA | -4.4 | 191207042_NYA_MIN |
| Carl Cashion | MIN | -2.46 | 191207041_NYA_MIN |
| Ralph Works | DET | -1.68 | 191207050_DET_CHA |
| Bob Harmon | SLN | -1.5 | 191207050_CHN_SLN |
| Elmer Knetzer | LAN | -1.08 | 191207032_LAN_SFN |
Based on accumulated WAA for this season up to 1912-07-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.64 | Walter Johnson | 181 | MIN |
| +002+ | 9.54 | Rube Marquard | 160.3 | SFN |
| +003+ | 6.6 | Slim Sallee | 157 | SLN |
| +004+ | 6.07 | Christy Mathewson | 137.7 | SFN |
| +005+ | 5.85 | Marty O'Toole | 143 | PIT |
| +007+ | 5.34 | Larry Cheney | 154.7 | CHN |
| +009+ | 5.23 | Nap Rucker | 130 | LAN |
| +010+ | 5.16 | Ed Walsh | 189 | CHA |
| +012+ | 4.76 | Jimmy Lavender | 105.3 | CHN |
| +011+ | 4.76 | George Suggs | 131.3 | CIN |
| +013+ | 4.66 | Claude Hendrix | 137.3 | PIT |
| +016+ | 3.91 | Joe Benz | 123.7 | CHA |
| +017+ | 3.91 | Rube Benton | 144 | CIN |
| +018+ | 3.86 | Charley Hall | 123 | BOS |
| +019+ | 3.59 | Lew Richie | 97.7 | CHN |
| +021+ | 3.41 | Smoky Joe Wood | 173.3 | BOS |
| +022+ | 3.34 | Red Ames | 90.3 | SFN |
| +026+ | 2.87 | Ad Brennan | 120 | PHI |
| +027+ | 2.85 | Hooks Wiltse | 81 | SFN |
| +029+ | 2.54 | Eddie Plank | 124.7 | OAK |
| +038+ | 2.25 | Howie Camnitz | 132 | PIT |
| +045+ | 1.95 | Pete Alexander | 129.7 | PHI |
| +046+ | 1.91 | Mordecai Brown | 67.3 | CHN |
| +051+ | 1.73 | Jack Coombs | 127 | OAK |
| +053+ | 1.7 | Rube Geyer | 64.3 | SLN |
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