| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 11.05 | 191205302_MIN_BOS |
| Ed Walsh | CHA | 7.53 | 191205301_CHA_CLE |
| Christy Mathewson | SFN | 6.35 | 191205280_SFN_LAN |
| Smoky Joe Wood | BOS | 3.97 | 191205291_MIN_BOS |
| Slim Sallee | SLN | 2.08 | 191205301_SLN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Earl Hamilton | BAL | -3.55 | 191205281_DET_BAL |
| Dixie Walker | MIN | -1.69 | 191205291_MIN_BOS |
| Willie Mitchell | CLE | -1.69 | 191205301_CHA_CLE |
| Hippo Vaughn | NYA | -1.2 | 191205300_OAK_NYA |
| Bob Harmon | SLN | -0.69 | 191205302_SLN_PIT |
Based on accumulated WAA for this season up to 1912-05-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.16 | Walter Johnson | 111 | MIN |
| +002+ | 5.97 | Rube Marquard | 85 | SFN |
| +003+ | 4.57 | Slim Sallee | 93.7 | SLN |
| +004+ | 4.23 | Ed Walsh | 112.3 | CHA |
| +005+ | 3.1 | Hooks Wiltse | 31 | SFN |
| +006+ | 3.09 | Marty O'Toole | 74.7 | PIT |
| +007+ | 2.97 | Christy Mathewson | 69.7 | SFN |
| +009+ | 2.71 | Larry Cheney | 96.3 | CHN |
| +010+ | 2.64 | Rube Benton | 78.7 | CIN |
| +011+ | 2.59 | Red Ames | 53.3 | SFN |
| +012+ | 2.52 | Ad Brennan | 62.7 | PHI |
| +014+ | 2.37 | Joe Benz | 68.7 | CHA |
| +015+ | 2.3 | Lew Richie | 55.7 | CHN |
| +016+ | 2.25 | George Baumgardner | 52.7 | BAL |
| +019+ | 2.01 | Buster Brown | 53.7 | ATL |
| +021+ | 1.92 | Jeff Tesreau | 42.3 | SFN |
| +022+ | 1.87 | Hub Perdue | 80.7 | ATL |
| +024+ | 1.74 | Claude Hendrix | 69.7 | PIT |
| +027+ | 1.72 | Walt Dickson | 30.7 | ATL |
| +026+ | 1.72 | Charley Hall | 61.3 | BOS |
| +029+ | 1.63 | Vean Gregg | 64.7 | CLE |
| +035+ | 1.46 | Smoky Joe Wood | 100.7 | BOS |
| +036+ | 1.43 | Tom Seaton | 72.3 | PHI |
| +039+ | 1.39 | Eddie Plank | 55 | OAK |
| +041+ | 1.36 | Jean Dubuc | 60.3 | DET |
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