| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 9.51 | 191208160_CHA_MIN |
| Christy Mathewson | SFN | 5.58 | 191208170_SFN_CHN |
| Claude Hendrix | PIT | 3.67 | 191208160_PHI_PIT |
| Nap Rucker | LAN | 3.51 | 191208160_LAN_CIN |
| Ed Walsh | CHA | 1.9 | 191208170_CHA_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ralph Works | DET | -3.57 | 191208160_DET_NYA |
| George McConnell | NYA | -2.22 | 191208150_DET_NYA |
| Carl Cashion | MIN | -1.91 | 191208150_CHA_MIN |
| Earl Hamilton | BAL | -1.14 | 191208160_BAL_BOS |
| Lefty Tyler | ATL | -1.06 | 191208150_ATL_SLN |
Based on accumulated WAA for this season up to 1912-08-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.37 | Walter Johnson | 275.3 | MIN |
| +002+ | 9.69 | Christy Mathewson | 227 | SFN |
| +004+ | 8.6 | Nap Rucker | 212.7 | LAN |
| +005+ | 8.39 | Rube Marquard | 217.7 | SFN |
| +006+ | 8.34 | Claude Hendrix | 230.7 | PIT |
| +007+ | 7.66 | Slim Sallee | 228.7 | SLN |
| +008+ | 7.59 | Marty O'Toole | 213.3 | PIT |
| +009+ | 6.66 | Smoky Joe Wood | 258 | BOS |
| +011+ | 6.16 | Pete Alexander | 231 | PHI |
| +012+ | 6.09 | Rube Benton | 216 | CIN |
| +014+ | 5.8 | Ed Walsh | 299 | CHA |
| +017+ | 4.76 | Art Fromme | 199.7 | CIN |
| +018+ | 4.75 | Lew Richie | 185.7 | CHN |
| +019+ | 4.73 | Jimmy Lavender | 176.3 | CHN |
| +020+ | 4.61 | George Suggs | 207 | CIN |
| +022+ | 4.41 | Jeff Tesreau | 134.7 | SFN |
| +026+ | 4.07 | Howie Camnitz | 204.7 | PIT |
| +028+ | 3.74 | Larry Cheney | 202 | CHN |
| +033+ | 3.5 | Red Ames | 131.7 | SFN |
| +035+ | 3.43 | Earl Moore | 138 | PHI |
| +036+ | 3.32 | Hank Robinson | 118.7 | PIT |
| +037+ | 3.28 | Eddie Plank | 191.7 | OAK |
| +039+ | 3.21 | Lefty Leifield | 82.7 | TOT |
| +044+ | 2.93 | Jean Dubuc | 211.7 | DET |
| +045+ | 2.89 | Rube Geyer | 116.7 | SLN |
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