| Starter | Tm | Tier | Game |
|---|---|---|---|
| Christy Mathewson | SFN | 6.71 | 191209160_CHN_SFN |
| Nap Rucker | LAN | 3.44 | 191209170_PIT_LAN |
| Claude Hendrix | PIT | 2.47 | 191209170_PIT_LAN |
| Art Fromme | CIN | 2.37 | 191209161_CIN_PHI |
| Larry Cheney | CHN | 1.36 | 191209170_CHN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Russ Ford | NYA | -4.6 | 191209182_NYA_DET |
| Boardwalk Brown | OAK | -3.01 | 191209182_OAK_CHA |
| Mack Allison | BAL | -1.76 | 191209181_MIN_BAL |
| Frank Lange | CHA | -1.23 | 191209181_OAK_CHA |
| Carl Cashion | MIN | -1.18 | 191209182_MIN_BAL |
Based on accumulated WAA for this season up to 1912-09-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.47 | Walter Johnson | 338.7 | MIN |
| +002+ | 12.31 | Christy Mathewson | 292 | SFN |
| +004+ | 9.62 | Nap Rucker | 268.3 | LAN |
| +005+ | 9.21 | Smoky Joe Wood | 319 | BOS |
| +006+ | 8.95 | Slim Sallee | 286.7 | SLN |
| +007+ | 8.57 | Art Fromme | 263.7 | CIN |
| +008+ | 8.34 | Jeff Tesreau | 204.7 | SFN |
| +009+ | 8.3 | Rube Marquard | 278 | SFN |
| +011+ | 7.45 | Rube Benton | 276.7 | CIN |
| +012+ | 7.4 | Claude Hendrix | 273.3 | PIT |
| +014+ | 6.9 | Larry Cheney | 274 | CHN |
| +016+ | 6.44 | Howie Camnitz | 255.3 | PIT |
| +018+ | 6.29 | Pete Alexander | 285 | PHI |
| +019+ | 6.2 | George Suggs | 265.3 | CIN |
| +020+ | 6.17 | Ed Walsh | 353 | CHA |
| +021+ | 6.05 | Marty O'Toole | 253.3 | PIT |
| +022+ | 5.77 | Hank Robinson | 160 | PIT |
| +024+ | 5.3 | Red Ames | 159.7 | SFN |
| +028+ | 5.14 | Eppa Rixey | 139 | PHI |
| +029+ | 5.05 | Lew Richie | 225.7 | CHN |
| +032+ | 4.84 | Jimmy Lavender | 230.3 | CHN |
| +035+ | 4.37 | Ray Collins | 174.3 | BOS |
| +037+ | 4.06 | Eddie Plank | 231.7 | OAK |
| +045+ | 3.05 | Vean Gregg | 253 | CLE |
| +050+ | 2.96 | Hooks Wiltse | 131.7 | SFN |
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