| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 10.13 | 191208020_MIN_DET |
| Christy Mathewson | SFN | 7.32 | 191208030_CIN_SFN |
| Nap Rucker | LAN | 3.6 | 191208031_CHN_LAN |
| Ed Walsh | CHA | 2.97 | 191208040_MIN_CHA |
| Marty O'Toole | PIT | 2.37 | 191208032_PIT_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Russ Ford | NYA | -1.92 | 191208040_NYA_DET |
| Earl Hamilton | BAL | -1.55 | 191208020_BOS_BAL |
| Joe Lake | DET | -1.55 | 191208040_NYA_DET |
| Hippo Vaughn | MIN | -1.41 | 191208030_MIN_DET |
| Lefty Tyler | ATL | -0.94 | 191208032_PIT_ATL |
Based on accumulated WAA for this season up to 1912-08-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.26 | Walter Johnson | 246.3 | MIN |
| +002+ | 10.05 | Christy Mathewson | 201.7 | SFN |
| +004+ | 8.14 | Nap Rucker | 192.7 | LAN |
| +005+ | 7.73 | Claude Hendrix | 199.3 | PIT |
| +007+ | 7.07 | Marty O'Toole | 190 | PIT |
| +008+ | 6.79 | Slim Sallee | 199.7 | SLN |
| +010+ | 6.08 | Ed Walsh | 269.3 | CHA |
| +011+ | 5.5 | Rube Benton | 197 | CIN |
| +014+ | 5.32 | Smoky Joe Wood | 226 | BOS |
| +015+ | 5.28 | Lew Richie | 158.3 | CHN |
| +016+ | 4.93 | Pete Alexander | 193.7 | PHI |
| +017+ | 4.88 | Jimmy Lavender | 154 | CHN |
| +020+ | 4.1 | Larry Cheney | 193 | CHN |
| +024+ | 3.49 | Art Fromme | 173.7 | CIN |
| +025+ | 3.47 | Bert Humphries | 127 | CIN |
| +026+ | 3.43 | George Suggs | 179.7 | CIN |
| +029+ | 3.35 | Red Ames | 122 | SFN |
| +030+ | 3.31 | Jeff Tesreau | 112.7 | SFN |
| +031+ | 3.31 | Ad Brennan | 168 | PHI |
| +034+ | 3.11 | Lefty Leifield | 78.7 | TOT |
| +038+ | 2.9 | Howie Camnitz | 176.7 | PIT |
| +043+ | 2.6 | Vean Gregg | 165 | CLE |
| +045+ | 2.53 | Rube Geyer | 100.7 | SLN |
| +050+ | 2.45 | Hooks Wiltse | 101.3 | SFN |
| +052+ | 2.26 | Joe Benz | 174.7 | CHA |
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