| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Caldwell | NYA | -1.5 | 191209150_NYA_CHA |
| Eddie Cicotte | CHA | -1.03 | 191209150_NYA_CHA |
| Willie Mitchell | CLE | -0.81 | 191209160_OAK_CLE |
| Earl Hamilton | BAL | -0.77 | 191209152_BOS_BAL |
| Lefty Tyler | ATL | -0.77 | 191209160_SLN_ATL |
Based on accumulated WAA for this season up to 1912-09-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.5 | Walter Johnson | 338.7 | MIN |
| +002+ | 12.33 | Christy Mathewson | 292 | SFN |
| +004+ | 9.65 | Nap Rucker | 268.3 | LAN |
| +005+ | 9.24 | Smoky Joe Wood | 319 | BOS |
| +006+ | 8.98 | Slim Sallee | 286.7 | SLN |
| +007+ | 8.59 | Art Fromme | 263.7 | CIN |
| +008+ | 8.36 | Jeff Tesreau | 204.7 | SFN |
| +009+ | 8.33 | Rube Marquard | 278 | SFN |
| +011+ | 7.58 | Claude Hendrix | 273.3 | PIT |
| +012+ | 7.47 | Rube Benton | 276.7 | CIN |
| +014+ | 6.92 | Larry Cheney | 274 | CHN |
| +017+ | 6.32 | Pete Alexander | 285 | PHI |
| +018+ | 6.23 | George Suggs | 265.3 | CIN |
| +019+ | 6.17 | Ed Walsh | 353 | CHA |
| +021+ | 5.87 | Hank Robinson | 160 | PIT |
| +023+ | 5.5 | Marty O'Toole | 245.3 | PIT |
| +024+ | 5.31 | Red Ames | 159.7 | SFN |
| +027+ | 5.15 | Eppa Rixey | 139 | PHI |
| +028+ | 5.07 | Lew Richie | 225.7 | CHN |
| +031+ | 4.86 | Jimmy Lavender | 230.3 | CHN |
| +034+ | 4.38 | Ray Collins | 174.3 | BOS |
| +037+ | 4.05 | Eddie Plank | 231.7 | OAK |
| +046+ | 3.08 | Vean Gregg | 253 | CLE |
| +048+ | 2.97 | Hooks Wiltse | 131.7 | SFN |
| +052+ | 2.88 | Hub Perdue | 236.7 | ATL |
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