| Starter | Tm | Tier | Game |
|---|---|---|---|
| Christy Mathewson | SFN | 6.86 | 191207300_CHN_SFN |
| Ed Walsh | CHA | 3.45 | 191207300_BOS_CHA |
| Nap Rucker | LAN | 3.21 | 191207290_CIN_LAN |
| Marty O'Toole | PIT | 1.67 | 191207310_PIT_ATL |
| Lew Richie | CHN | 1.52 | 191207290_CHN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ralph Works | DET | -3.84 | 191207290_OAK_DET |
| Carl Cashion | MIN | -2.06 | 191207310_MIN_DET |
| Russ Ford | NYA | -1.83 | 191207310_NYA_CHA |
| Bill Steele | SLN | -1.03 | 191207311_SLN_PHI |
| Roy Mitchell | BAL | -0.89 | 191207300_NYA_BAL |
Based on accumulated WAA for this season up to 1912-07-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.68 | Walter Johnson | 236.3 | MIN |
| +002+ | 9.35 | Christy Mathewson | 192.7 | SFN |
| +003+ | 8.87 | Rube Marquard | 198.7 | SFN |
| +004+ | 7.43 | Nap Rucker | 183.7 | LAN |
| +006+ | 7 | Claude Hendrix | 190.3 | PIT |
| +007+ | 7 | Slim Sallee | 191.7 | SLN |
| +008+ | 6.97 | Marty O'Toole | 181 | PIT |
| +010+ | 5.85 | Ed Walsh | 256 | CHA |
| +011+ | 5.44 | Rube Benton | 189 | CIN |
| +014+ | 4.76 | Lew Richie | 149.3 | CHN |
| +015+ | 4.64 | Pete Alexander | 184.7 | PHI |
| +016+ | 4.59 | Smoky Joe Wood | 217 | BOS |
| +018+ | 4.23 | Larry Cheney | 193 | CHN |
| +019+ | 4.21 | George Suggs | 171.7 | CIN |
| +021+ | 4.14 | Jimmy Lavender | 145 | CHN |
| +023+ | 3.77 | Bert Humphries | 118.7 | CIN |
| +026+ | 3.45 | Red Ames | 122 | SFN |
| +027+ | 3.45 | Ad Brennan | 168 | PHI |
| +028+ | 3.42 | Art Fromme | 165.7 | CIN |
| +034+ | 3.08 | Vean Gregg | 162.7 | CLE |
| +036+ | 3 | Howie Camnitz | 176.7 | PIT |
| +037+ | 2.85 | Eppa Rixey | 57.7 | PHI |
| +043+ | 2.59 | Rube Geyer | 100.7 | SLN |
| +044+ | 2.54 | Jeff Tesreau | 103.7 | SFN |
| +049+ | 2.31 | Lefty Leifield | 69.7 | TOT |
_