| Starter | Tm | Tier | Game |
|---|---|---|---|
| Earl Hamilton | BAL | -4.61 | 191206070_OAK_BAL |
| Ray Caldwell | NYA | -2.84 | 191206070_NYA_CLE |
| Bill Steele | SLN | -2.07 | 191206070_SLN_PHI |
| Bob Groom | MIN | -1.18 | 191206070_MIN_CHA |
| Lefty Tyler | ATL | -0.94 | 191206080_PIT_ATL |
Based on accumulated WAA for this season up to 1912-06-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.44 | Walter Johnson | 133 | MIN |
| +002+ | 6.88 | Rube Marquard | 103 | SFN |
| +003+ | 4.97 | Slim Sallee | 97 | SLN |
| +004+ | 4.11 | Hooks Wiltse | 41.3 | SFN |
| +005+ | 4.05 | Larry Cheney | 114.3 | CHN |
| +006+ | 3.97 | Ed Walsh | 126.7 | CHA |
| +007+ | 3.47 | Christy Mathewson | 87.7 | SFN |
| +010+ | 3.23 | George Kahler | 106.7 | CLE |
| +011+ | 3.23 | Rube Benton | 94.7 | CIN |
| +012+ | 3.02 | Red Ames | 60 | SFN |
| +013+ | 2.92 | Marty O'Toole | 87.7 | PIT |
| +014+ | 2.91 | Ad Brennan | 77.3 | PHI |
| +017+ | 2.61 | Claude Hendrix | 86.7 | PIT |
| +018+ | 2.3 | Jean Dubuc | 78.3 | DET |
| +023+ | 1.99 | Hub Perdue | 82.3 | ATL |
| +024+ | 1.95 | Walt Dickson | 45.3 | ATL |
| +026+ | 1.84 | Jack Powell | 72 | BAL |
| +031+ | 1.72 | Tom Seaton | 80 | PHI |
| +034+ | 1.61 | Babe Adams | 68.3 | PIT |
| +035+ | 1.56 | Eddie Plank | 73 | OAK |
| +036+ | 1.54 | George Baumgardner | 58.3 | BAL |
| +037+ | 1.53 | Buster Brown | 63.7 | ATL |
| +038+ | 1.46 | Joe Benz | 78.7 | CHA |
| +039+ | 1.41 | Cliff Curtis | 28 | PHI |
| +041+ | 1.37 | Smoky Joe Wood | 122.3 | BOS |
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