| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Marquard | SFN | 4.75 | 191207191_SFN_PIT |
| Ed Walsh | CHA | 3.85 | 191207200_CHA_BOS |
| Nap Rucker | LAN | 3.64 | 191207211_LAN_CHN |
| Marty O'Toole | PIT | 2.27 | 191207191_SFN_PIT |
| Rube Benton | CIN | 1.31 | 191207210_SFN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Cashion | MIN | -2.58 | 191207192_BAL_MIN |
| Ralph Works | DET | -1.94 | 191207192_DET_OAK |
| Ray Caldwell | NYA | -1.91 | 191207202_CLE_NYA |
| Lefty Tyler | ATL | -1.83 | 191207190_ATL_CIN |
| Bill Steele | SLN | -1.62 | 191207200_LAN_SLN |
Based on accumulated WAA for this season up to 1912-07-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.92 | Walter Johnson | 209.3 | MIN |
| +002+ | 8.8 | Rube Marquard | 182.7 | SFN |
| +003+ | 7.39 | Christy Mathewson | 165.7 | SFN |
| +004+ | 6.77 | Slim Sallee | 182.7 | SLN |
| +005+ | 6.56 | Nap Rucker | 167.3 | LAN |
| +007+ | 6.03 | Marty O'Toole | 162 | PIT |
| +009+ | 5.89 | Ed Walsh | 226 | CHA |
| +010+ | 5.62 | Claude Hendrix | 173.3 | PIT |
| +011+ | 5.43 | Rube Benton | 176.3 | CIN |
| +013+ | 5.12 | Jimmy Lavender | 136 | CHN |
| +014+ | 5.02 | George Suggs | 154.3 | CIN |
| +015+ | 4.71 | Smoky Joe Wood | 203.3 | BOS |
| +018+ | 4.22 | Lew Richie | 126.3 | CHN |
| +019+ | 4.16 | Pete Alexander | 166.7 | PHI |
| +022+ | 3.51 | Larry Cheney | 184 | CHN |
| +023+ | 3.41 | Bert Humphries | 108.7 | CIN |
| +024+ | 3.22 | Art Fromme | 148.7 | CIN |
| +026+ | 3.15 | Charley Hall | 136.3 | BOS |
| +034+ | 2.72 | Eppa Rixey | 39 | PHI |
| +039+ | 2.55 | Joe Benz | 145.7 | CHA |
| +038+ | 2.55 | Hub Perdue | 139.3 | ATL |
| +042+ | 2.36 | Hank Robinson | 83 | PIT |
| +043+ | 2.31 | Hooks Wiltse | 90.3 | SFN |
| +046+ | 2.22 | Red Ames | 107 | SFN |
| +048+ | 2.16 | Rube Geyer | 85 | SLN |
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