| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 9.76 | 191208110_MIN_BAL |
| Nap Rucker | LAN | 3.97 | 191208120_PIT_LAN |
| Marty O'Toole | PIT | 2.42 | 191208100_PIT_LAN |
| Ed Walsh | CHA | 2.13 | 191208120_CHA_CLE |
| Smoky Joe Wood | BOS | 1.74 | 191208100_BOS_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Earl Hamilton | BAL | -1.43 | 191208110_MIN_BAL |
| Ed Willett | DET | -1.15 | 191208100_BOS_DET |
| Ray Caldwell | NYA | -1.11 | 191208100_NYA_CLE |
| Bob Groom | MIN | -0.92 | 191208101_MIN_BAL |
| George Kahler | CLE | -0.84 | 191208120_CHA_CLE |
Based on accumulated WAA for this season up to 1912-08-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.53 | Walter Johnson | 264.7 | MIN |
| +002+ | 9.88 | Christy Mathewson | 216.7 | SFN |
| +003+ | 9.12 | Rube Marquard | 213 | SFN |
| +004+ | 8.4 | Nap Rucker | 209.7 | LAN |
| +005+ | 8.32 | Claude Hendrix | 217.7 | PIT |
| +007+ | 7.56 | Slim Sallee | 224 | SLN |
| +008+ | 6.88 | Marty O'Toole | 204.3 | PIT |
| +010+ | 5.88 | Ed Walsh | 287.3 | CHA |
| +011+ | 5.84 | Smoky Joe Wood | 246 | BOS |
| +012+ | 5.7 | Rube Benton | 206 | CIN |
| +015+ | 5.34 | Pete Alexander | 212.3 | PHI |
| +016+ | 5.13 | Jimmy Lavender | 175 | CHN |
| +018+ | 4.45 | Art Fromme | 190.7 | CIN |
| +019+ | 4.27 | Lew Richie | 165.7 | CHN |
| +020+ | 4.26 | Jeff Tesreau | 125.7 | SFN |
| +025+ | 3.89 | Larry Cheney | 200 | CHN |
| +026+ | 3.82 | George Suggs | 197.3 | CIN |
| +029+ | 3.61 | Vean Gregg | 183 | CLE |
| +030+ | 3.57 | Red Ames | 131.7 | SFN |
| +031+ | 3.52 | Eppa Rixey | 81 | PHI |
| +033+ | 3.27 | Jean Dubuc | 201.7 | DET |
| +034+ | 3.27 | Howie Camnitz | 185.7 | PIT |
| +035+ | 3.26 | Lefty Leifield | 82.7 | TOT |
| +040+ | 3.21 | Ad Brennan | 168 | PHI |
| +041+ | 3.03 | Rube Geyer | 110.7 | SLN |
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