| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 12.92 | 191206120_MIN_DET |
| Ed Walsh | CHA | 5.9 | 191206120_NYA_CHA |
| Christy Mathewson | SFN | 4.93 | 191206130_CHN_SFN |
| Chief Bender | OAK | 2.36 | 191206140_OAK_DET |
| Smoky Joe Wood | BOS | 1.92 | 191206120_BOS_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty George | CLE | -2.3 | 191206130_MIN_CLE |
| Hippo Vaughn | NYA | -1.8 | 191206120_NYA_CHA |
| Bill Steele | SLN | -1.71 | 191206120_SLN_ATL |
| Tex Covington | DET | -1.03 | 191206120_MIN_DET |
| Bob Groom | MIN | -0.89 | 191206130_MIN_CLE |
Based on accumulated WAA for this season up to 1912-06-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.13 | Walter Johnson | 143 | MIN |
| +002+ | 7.17 | Rube Marquard | 111 | SFN |
| +003+ | 4.92 | Slim Sallee | 105 | SLN |
| +004+ | 4.67 | Ed Walsh | 138.7 | CHA |
| +005+ | 4.28 | Christy Mathewson | 98.7 | SFN |
| +006+ | 4.22 | Larry Cheney | 122.3 | CHN |
| +008+ | 3.79 | Marty O'Toole | 96.7 | PIT |
| +011+ | 3.18 | Hooks Wiltse | 51.3 | SFN |
| +012+ | 3.06 | Claude Hendrix | 95.7 | PIT |
| +014+ | 3.04 | Red Ames | 67 | SFN |
| +015+ | 2.93 | Ad Brennan | 84.3 | PHI |
| +016+ | 2.83 | Rube Benton | 101 | CIN |
| +017+ | 2.71 | Hub Perdue | 92.3 | ATL |
| +018+ | 2.52 | Jean Dubuc | 87.3 | DET |
| +020+ | 2.46 | Lew Richie | 63.7 | CHN |
| +021+ | 2.24 | George Suggs | 88.7 | CIN |
| +022+ | 2.13 | Nap Rucker | 88 | LAN |
| +023+ | 1.98 | Cliff Curtis | 38 | PHI |
| +026+ | 1.89 | Walt Dickson | 47.3 | ATL |
| +028+ | 1.86 | Eddie Plank | 84.7 | OAK |
| +031+ | 1.74 | Tom Seaton | 95.3 | PHI |
| +033+ | 1.71 | Charley Hall | 78 | BOS |
| +038+ | 1.62 | Jack Powell | 81 | BAL |
| +040+ | 1.59 | Babe Adams | 68.3 | PIT |
| +041+ | 1.58 | Smoky Joe Wood | 131.3 | BOS |
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