| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Walsh | CHA | 5.83 | 191206210_BAL_CHA |
| Rube Marquard | SFN | 5.8 | 191206210_SFN_ATL |
| Slim Sallee | SLN | 2.79 | 191206200_CHN_SLN |
| Chief Bender | OAK | 2.08 | 191206192_MIN_OAK |
| Smoky Joe Wood | BOS | 1.89 | 191206210_BOS_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Cashion | MIN | -2.48 | 191206202_MIN_OAK |
| Joe Willis | SLN | -1.44 | 191206210_CHN_SLN |
| Boardwalk Brown | OAK | -1.4 | 191206202_MIN_OAK |
| Jack Quinn | NYA | -1.04 | 191206210_BOS_NYA |
| Joe Lake | DET | -0.97 | 191206200_CLE_DET |
Based on accumulated WAA for this season up to 1912-06-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.86 | Rube Marquard | 133.3 | SFN |
| +003+ | 6.06 | Slim Sallee | 122 | SLN |
| +004+ | 4.75 | Ed Walsh | 158.7 | CHA |
| +005+ | 4.72 | Larry Cheney | 133.7 | CHN |
| +006+ | 4.65 | Christy Mathewson | 106.7 | SFN |
| +009+ | 3.8 | Marty O'Toole | 107 | PIT |
| +010+ | 3.75 | Rube Benton | 118 | CIN |
| +011+ | 3.53 | Ad Brennan | 93.3 | PHI |
| +013+ | 3.43 | Hooks Wiltse | 59.3 | SFN |
| +015+ | 3.31 | Claude Hendrix | 112.7 | PIT |
| +016+ | 3.25 | Nap Rucker | 101 | LAN |
| +017+ | 3.07 | Hub Perdue | 110.3 | ATL |
| +018+ | 3.02 | George Suggs | 97.7 | CIN |
| +019+ | 2.82 | Red Ames | 74.7 | SFN |
| +020+ | 2.46 | Joe Benz | 94.7 | CHA |
| +025+ | 2.37 | Lew Richie | 63.7 | CHN |
| +026+ | 2.33 | Cliff Curtis | 46 | PHI |
| +027+ | 2.31 | Jack Coombs | 95 | OAK |
| +028+ | 2.27 | Charley Hall | 87 | BOS |
| +029+ | 2.23 | Eddie Plank | 102.7 | OAK |
| +032+ | 2.07 | Walt Dickson | 56.3 | ATL |
| +034+ | 1.83 | Vean Gregg | 87.3 | CLE |
| +037+ | 1.8 | Jack Powell | 90 | BAL |
| +040+ | 1.71 | Chief Bender | 76.3 | OAK |
| +041+ | 1.7 | Jean Dubuc | 97.3 | DET |
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