| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mack Allison | BAL | -1.51 | 191209271_CHA_BAL |
| Bill Steele | SLN | -1.48 | 191209260_SLN_PIT |
| Willie Mitchell | CLE | -1.26 | 191209270_DET_CLE |
| Eddie Cicotte | CHA | -0.96 | 191209272_CHA_BAL |
| Tom Hughes | MIN | -0.92 | 191209260_MIN_OAK |
Based on accumulated WAA for this season up to 1912-09-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 14.51 | Walter Johnson | 360.3 | MIN |
| +002+ | 12.83 | Christy Mathewson | 310 | SFN |
| +004+ | 10.61 | Nap Rucker | 277.3 | LAN |
| +005+ | 9.89 | Smoky Joe Wood | 336 | BOS |
| +006+ | 9.3 | Jeff Tesreau | 222.7 | SFN |
| +009+ | 8.08 | Pete Alexander | 303 | PHI |
| +011+ | 7.86 | Art Fromme | 282.7 | CIN |
| +012+ | 7.73 | Claude Hendrix | 279.3 | PIT |
| +014+ | 7.67 | Larry Cheney | 288.3 | CHN |
| +015+ | 7.38 | Ed Walsh | 372.7 | CHA |
| +018+ | 7.05 | Marty O'Toole | 262.3 | PIT |
| +019+ | 6.93 | Howie Camnitz | 263.3 | PIT |
| +020+ | 6.48 | George Suggs | 290.7 | CIN |
| +021+ | 6.21 | Rube Benton | 287.7 | CIN |
| +022+ | 6.18 | Hank Robinson | 175 | PIT |
| +023+ | 6.08 | Red Ames | 168.7 | SFN |
| +027+ | 5.7 | Eppa Rixey | 149 | PHI |
| +030+ | 5 | Eddie Plank | 259.7 | OAK |
| +035+ | 4.56 | Ray Collins | 183.3 | BOS |
| +036+ | 4.55 | Jimmy Lavender | 247 | CHN |
| +041+ | 3.67 | Vean Gregg | 262 | CLE |
| +047+ | 3.11 | Tom Seaton | 244.3 | PHI |
| +061+ | 2.57 | Rube Geyer | 178.3 | SLN |
| +069+ | 2.11 | Buck O'Brien | 257.7 | BOS |
| +076+ | 1.73 | Eddie Stack | 138.7 | LAN |
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