| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 10.59 | 191207160_CHA_MIN |
| Christy Mathewson | SFN | 5.5 | 191207170_SFN_PIT |
| Slim Sallee | SLN | 3.67 | 191207150_SFN_SLN |
| Ed Walsh | CHA | 3.48 | 191207171_CHA_BOS |
| Nap Rucker | LAN | 3.18 | 191207170_LAN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| George McConnell | NYA | -3.03 | 191207170_CLE_NYA |
| Ralph Works | DET | -2.04 | 191207150_DET_BOS |
| Earl Hamilton | BAL | -1.9 | 191207162_BAL_NYA |
| King Cole | PIT | -1.42 | 191207160_LAN_PIT |
| Hippo Vaughn | MIN | -1.03 | 191207172_BAL_MIN |
Based on accumulated WAA for this season up to 1912-07-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.11 | Walter Johnson | 207 | MIN |
| +002+ | 8.66 | Rube Marquard | 173.7 | SFN |
| +003+ | 7.38 | Christy Mathewson | 164.7 | SFN |
| +004+ | 7.06 | Nap Rucker | 159.3 | LAN |
| +005+ | 6.68 | Marty O'Toole | 159 | PIT |
| +006+ | 6.52 | Slim Sallee | 176.7 | SLN |
| +007+ | 5.88 | Ed Walsh | 217.7 | CHA |
| +008+ | 5.71 | Claude Hendrix | 164.3 | PIT |
| +011+ | 5.6 | Jimmy Lavender | 131 | CHN |
| +013+ | 4.92 | Smoky Joe Wood | 203.3 | BOS |
| +014+ | 4.91 | Rube Benton | 165.3 | CIN |
| +015+ | 4.68 | George Suggs | 145.3 | CIN |
| +017+ | 4.42 | Larry Cheney | 181 | CHN |
| +020+ | 3.83 | Pete Alexander | 157.7 | PHI |
| +022+ | 3.45 | Joe Benz | 138.7 | CHA |
| +027+ | 2.94 | Red Ames | 103 | SFN |
| +030+ | 2.84 | Charley Hall | 127.3 | BOS |
| +032+ | 2.74 | Hooks Wiltse | 90 | SFN |
| +036+ | 2.65 | Ad Brennan | 132.7 | PHI |
| +038+ | 2.61 | Bert Humphries | 99.7 | CIN |
| +039+ | 2.46 | Art Fromme | 139.7 | CIN |
| +043+ | 2.21 | Rube Geyer | 85 | SLN |
| +045+ | 2.19 | Jean Dubuc | 147.7 | DET |
| +047+ | 2.16 | Vean Gregg | 135.3 | CLE |
| +048+ | 2.14 | Hub Perdue | 130.3 | ATL |
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