| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 8.2 | 191209221_MIN_CHA |
| Nap Rucker | LAN | 3.9 | 191209210_SLN_LAN |
| Art Fromme | CIN | 3.12 | 191209210_CIN_ATL |
| Jeff Tesreau | SFN | 2.78 | 191209210_PIT_SFN |
| Larry Cheney | CHN | 1.75 | 191209211_CHN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Boardwalk Brown | OAK | -2.4 | 191209222_OAK_BAL |
| Mack Allison | BAL | -1.51 | 191209221_OAK_BAL |
| Ed Willett | DET | -1.1 | 191209210_BOS_DET |
| Frank Lange | CHA | -0.92 | 191209222_MIN_CHA |
| Elmer Knetzer | LAN | -0.9 | 191209230_SLN_LAN |
Based on accumulated WAA for this season up to 1912-09-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.68 | Walter Johnson | 347.7 | MIN |
| +002+ | 12.51 | Christy Mathewson | 301 | SFN |
| +004+ | 10.5 | Nap Rucker | 277.3 | LAN |
| +005+ | 9.21 | Jeff Tesreau | 222.7 | SFN |
| +007+ | 8.89 | Smoky Joe Wood | 327 | BOS |
| +008+ | 8.46 | Rube Marquard | 284 | SFN |
| +009+ | 8.4 | Art Fromme | 274.7 | CIN |
| +011+ | 7.94 | Rube Benton | 285.7 | CIN |
| +012+ | 7.55 | Claude Hendrix | 276.3 | PIT |
| +015+ | 7.12 | Pete Alexander | 294 | PHI |
| +014+ | 7.12 | Larry Cheney | 282 | CHN |
| +016+ | 6.99 | Ed Walsh | 362 | CHA |
| +017+ | 6.82 | Howie Camnitz | 263.3 | PIT |
| +019+ | 6.43 | George Suggs | 280.7 | CIN |
| +020+ | 6.2 | Hank Robinson | 169 | PIT |
| +022+ | 6.14 | Marty O'Toole | 253.3 | PIT |
| +024+ | 6.01 | Red Ames | 168.7 | SFN |
| +028+ | 5.54 | Eppa Rixey | 148 | PHI |
| +032+ | 4.83 | Jimmy Lavender | 238.3 | CHN |
| +035+ | 4.54 | Eddie Plank | 240.7 | OAK |
| +036+ | 4.46 | Ray Collins | 183.3 | BOS |
| +050+ | 2.87 | Hooks Wiltse | 131.7 | SFN |
| +066+ | 2.18 | Tom Seaton | 235.3 | PHI |
| +068+ | 2.14 | Rube Geyer | 170.3 | SLN |
| +071+ | 2.1 | Hub Perdue | 245.7 | ATL |
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