| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 12.92 | 191206120_MIN_DET |
| Ed Walsh | CHA | 5.9 | 191206120_NYA_CHA |
| Rube Marquard | SFN | 4.65 | 191206120_CHN_SFN |
| Chief Bender | OAK | 2.42 | 191206100_OAK_CLE |
| Slim Sallee | SLN | 2.23 | 191206100_SLN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Earl Hamilton | BAL | -4.81 | 191206110_BOS_BAL |
| Hippo Vaughn | NYA | -1.8 | 191206120_NYA_CHA |
| Bill Steele | SLN | -1.71 | 191206120_SLN_ATL |
| Tex Covington | DET | -1.03 | 191206120_MIN_DET |
| Howie Camnitz | PIT | -0.95 | 191206100_PIT_LAN |
Based on accumulated WAA for this season up to 1912-06-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.14 | Walter Johnson | 143 | MIN |
| +002+ | 7.16 | Rube Marquard | 111 | SFN |
| +003+ | 4.87 | Slim Sallee | 105 | SLN |
| +004+ | 4.2 | Ed Walsh | 129.7 | CHA |
| +005+ | 4.02 | Larry Cheney | 114.3 | CHN |
| +007+ | 3.59 | Christy Mathewson | 89.7 | SFN |
| +010+ | 3.31 | Hooks Wiltse | 46.3 | SFN |
| +011+ | 3.22 | Rube Benton | 94.7 | CIN |
| +013+ | 3.06 | Claude Hendrix | 95.7 | PIT |
| +014+ | 3.03 | Red Ames | 67 | SFN |
| +015+ | 2.89 | Marty O'Toole | 87.7 | PIT |
| +016+ | 2.85 | Ad Brennan | 77.3 | PHI |
| +017+ | 2.71 | Hub Perdue | 92.3 | ATL |
| +019+ | 2.51 | Jean Dubuc | 87.3 | DET |
| +020+ | 2.43 | Lew Richie | 63.7 | CHN |
| +021+ | 2.36 | Tom Seaton | 89 | PHI |
| +022+ | 2.28 | George Kahler | 114.7 | CLE |
| +023+ | 2.21 | George Suggs | 88.7 | CIN |
| +026+ | 1.89 | Walt Dickson | 47.3 | ATL |
| +027+ | 1.88 | Cliff Curtis | 37 | PHI |
| +035+ | 1.7 | Charley Hall | 78 | BOS |
| +037+ | 1.63 | Jack Powell | 81 | BAL |
| +038+ | 1.58 | Babe Adams | 68.3 | PIT |
| +040+ | 1.56 | Smoky Joe Wood | 131.3 | BOS |
| +041+ | 1.56 | Chief Bender | 59 | OAK |
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