| Starter | Tm | Tier | Game |
|---|---|---|---|
| Christy Mathewson | SFN | 5.37 | 191206180_PIT_SFN |
| Slim Sallee | SLN | 2.79 | 191206200_CHN_SLN |
| Chief Bender | OAK | 2.08 | 191206192_MIN_OAK |
| Babe Adams | PIT | 1.52 | 191206201_PIT_CIN |
| Larry Cheney | CHN | 0.91 | 191206180_CHN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Cashion | MIN | -2.48 | 191206202_MIN_OAK |
| Bill Steele | SLN | -1.87 | 191206180_SLN_LAN |
| Boardwalk Brown | OAK | -1.4 | 191206202_MIN_OAK |
| Joe Lake | DET | -0.97 | 191206200_CLE_DET |
| Jack Warhop | NYA | -0.84 | 191206190_BOS_NYA |
Based on accumulated WAA for this season up to 1912-06-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.4 | Rube Marquard | 124.3 | SFN |
| +003+ | 6.05 | Slim Sallee | 122 | SLN |
| +004+ | 4.69 | Larry Cheney | 131.3 | CHN |
| +005+ | 4.64 | Christy Mathewson | 106.7 | SFN |
| +008+ | 4.09 | Ed Walsh | 149.7 | CHA |
| +009+ | 3.79 | Marty O'Toole | 107 | PIT |
| +010+ | 3.73 | Rube Benton | 118 | CIN |
| +011+ | 3.5 | Ad Brennan | 93.3 | PHI |
| +012+ | 3.43 | Hooks Wiltse | 59.3 | SFN |
| +014+ | 3.29 | Claude Hendrix | 112.7 | PIT |
| +016+ | 3.01 | George Suggs | 97.7 | CIN |
| +017+ | 2.81 | Red Ames | 74.7 | SFN |
| +018+ | 2.79 | Hub Perdue | 101.3 | ATL |
| +021+ | 2.45 | Joe Benz | 94.7 | CHA |
| +022+ | 2.36 | Lew Richie | 63.7 | CHN |
| +023+ | 2.34 | Nap Rucker | 92 | LAN |
| +025+ | 2.31 | Cliff Curtis | 46 | PHI |
| +026+ | 2.3 | Jack Coombs | 95 | OAK |
| +027+ | 2.27 | Charley Hall | 87 | BOS |
| +028+ | 2.23 | Eddie Plank | 102.7 | OAK |
| +031+ | 2.07 | Walt Dickson | 56.3 | ATL |
| +034+ | 1.82 | Vean Gregg | 87.3 | CLE |
| +037+ | 1.77 | Jack Powell | 90 | BAL |
| +040+ | 1.71 | Chief Bender | 76.3 | OAK |
| +043+ | 1.6 | Jean Dubuc | 96.3 | DET |
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