| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 9.18 | 191207281_MIN_CLE |
| Christy Mathewson | SFN | 6.86 | 191207300_CHN_SFN |
| Ed Walsh | CHA | 3.45 | 191207300_BOS_CHA |
| Nap Rucker | LAN | 3.21 | 191207290_CIN_LAN |
| Smoky Joe Wood | BOS | 2.56 | 191207280_BOS_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ralph Works | DET | -3.84 | 191207290_OAK_DET |
| George McConnell | NYA | -2.69 | 191207281_NYA_BAL |
| Hippo Vaughn | MIN | -1.34 | 191207282_MIN_CLE |
| Earl Hamilton | BAL | -1.04 | 191207282_NYA_BAL |
| Eddie Cicotte | CHA | -0.55 | 191207280_BOS_CHA |
Based on accumulated WAA for this season up to 1912-07-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.68 | Walter Johnson | 236.3 | MIN |
| +002+ | 9.38 | Christy Mathewson | 192.7 | SFN |
| +003+ | 8.9 | Rube Marquard | 198.7 | SFN |
| +004+ | 7.46 | Nap Rucker | 183.7 | LAN |
| +005+ | 7.24 | Claude Hendrix | 190.3 | PIT |
| +007+ | 7 | Slim Sallee | 191.7 | SLN |
| +009+ | 6.07 | Marty O'Toole | 169 | PIT |
| +010+ | 5.89 | Ed Walsh | 256 | CHA |
| +012+ | 5.45 | Rube Benton | 189 | CIN |
| +014+ | 4.78 | Lew Richie | 149.3 | CHN |
| +015+ | 4.67 | Pete Alexander | 184.7 | PHI |
| +016+ | 4.62 | Smoky Joe Wood | 217 | BOS |
| +018+ | 4.26 | Larry Cheney | 193 | CHN |
| +019+ | 4.21 | George Suggs | 171.7 | CIN |
| +020+ | 4.16 | Jimmy Lavender | 145 | CHN |
| +023+ | 3.77 | Bert Humphries | 118.7 | CIN |
| +031+ | 3.18 | Art Fromme | 158.7 | CIN |
| +032+ | 3.11 | Vean Gregg | 162.7 | CLE |
| +033+ | 3.07 | Howie Camnitz | 175 | PIT |
| +035+ | 2.86 | Eppa Rixey | 57.7 | PHI |
| +041+ | 2.61 | Red Ames | 113 | SFN |
| +042+ | 2.6 | Ad Brennan | 159 | PHI |
| +044+ | 2.55 | Jeff Tesreau | 103.7 | SFN |
| +048+ | 2.31 | Hooks Wiltse | 92.3 | SFN |
| +051+ | 2.18 | Earl Moore | 98.3 | PHI |
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