| Starter | Tm | Tier | Game |
|---|---|---|---|
| Russ Ford | NYA | -4.55 | 191209130_NYA_CHA |
| Joe Lake | DET | -2.24 | 191209110_OAK_DET |
| Mack Allison | BAL | -2.06 | 191209120_NYA_BAL |
| Boardwalk Brown | OAK | -1.83 | 191209130_OAK_CLE |
| Frank Lange | CHA | -1.11 | 191209120_BOS_CHA |
Based on accumulated WAA for this season up to 1912-09-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.51 | Walter Johnson | 330.7 | MIN |
| +002+ | 12.28 | Christy Mathewson | 283 | SFN |
| +004+ | 9.37 | Nap Rucker | 259.3 | LAN |
| +005+ | 9.05 | Slim Sallee | 286.7 | SLN |
| +006+ | 8.88 | Rube Marquard | 275.7 | SFN |
| +007+ | 8.73 | Smoky Joe Wood | 311 | BOS |
| +008+ | 8.15 | Claude Hendrix | 269.3 | PIT |
| +009+ | 7.88 | Art Fromme | 254.7 | CIN |
| +010+ | 7.64 | Jeff Tesreau | 195.7 | SFN |
| +013+ | 6.76 | Rube Benton | 267.7 | CIN |
| +014+ | 6.6 | George Suggs | 261.3 | CIN |
| +017+ | 6.42 | Larry Cheney | 265 | CHN |
| +018+ | 6.32 | Ed Walsh | 353 | CHA |
| +020+ | 5.94 | Pete Alexander | 277 | PHI |
| +021+ | 5.59 | Marty O'Toole | 245.3 | PIT |
| +024+ | 5.39 | Red Ames | 159.7 | SFN |
| +027+ | 5.12 | Hank Robinson | 151 | PIT |
| +033+ | 4.32 | Ray Collins | 164.3 | BOS |
| +044+ | 3.14 | Babe Adams | 152.3 | PIT |
| +046+ | 3.03 | Hooks Wiltse | 131.7 | SFN |
| +053+ | 2.72 | Rube Geyer | 160.3 | SLN |
| +055+ | 2.71 | Vean Gregg | 242 | CLE |
| +060+ | 2.38 | Hub Perdue | 227.7 | ATL |
| +061+ | 2.37 | Earl Moore | 172 | PHI |
| +066+ | 2.08 | Hugh Bedient | 207 | BOS |
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