| Starter | Tm | Tier | Game |
|---|---|---|---|
| Christy Mathewson | SFN | 6.89 | 191209121_SLN_SFN |
| Nap Rucker | LAN | 4.21 | 191209122_CIN_LAN |
| Slim Sallee | SLN | 3.5 | 191209130_SLN_SFN |
| Claude Hendrix | PIT | 2.77 | 191209120_PIT_PHI |
| George Suggs | CIN | 1.72 | 191209130_CIN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Russ Ford | NYA | -4.55 | 191209130_NYA_CHA |
| Mack Allison | BAL | -2.06 | 191209120_NYA_BAL |
| Boardwalk Brown | OAK | -1.83 | 191209130_OAK_CLE |
| Frank Lange | CHA | -1.11 | 191209120_BOS_CHA |
| Carl Cashion | MIN | -1.11 | 191209140_MIN_DET |
Based on accumulated WAA for this season up to 1912-09-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.5 | Walter Johnson | 330.7 | MIN |
| +002+ | 12.25 | Christy Mathewson | 283 | SFN |
| +004+ | 9.34 | Nap Rucker | 259.3 | LAN |
| +005+ | 9.04 | Slim Sallee | 286.7 | SLN |
| +006+ | 8.85 | Rube Marquard | 275.7 | SFN |
| +007+ | 8.7 | Smoky Joe Wood | 311 | BOS |
| +008+ | 8.44 | Jeff Tesreau | 204.7 | SFN |
| +009+ | 8.13 | Claude Hendrix | 269.3 | PIT |
| +010+ | 7.85 | Art Fromme | 254.7 | CIN |
| +013+ | 6.74 | Rube Benton | 267.7 | CIN |
| +014+ | 6.57 | George Suggs | 261.3 | CIN |
| +017+ | 6.42 | Larry Cheney | 265 | CHN |
| +018+ | 6.29 | Ed Walsh | 353 | CHA |
| +020+ | 5.91 | Pete Alexander | 277 | PHI |
| +021+ | 5.57 | Marty O'Toole | 245.3 | PIT |
| +022+ | 5.37 | Red Ames | 159.7 | SFN |
| +027+ | 5.16 | Lew Richie | 225.7 | CHN |
| +035+ | 4.31 | Ray Collins | 164.3 | BOS |
| +044+ | 3.13 | Babe Adams | 152.3 | PIT |
| +046+ | 3.02 | Hooks Wiltse | 131.7 | SFN |
| +049+ | 2.9 | Rube Geyer | 162.3 | SLN |
| +053+ | 2.76 | Vean Gregg | 242 | CLE |
| +061+ | 2.36 | Hub Perdue | 227.7 | ATL |
| +062+ | 2.36 | Earl Moore | 172 | PHI |
| +069+ | 2.06 | Hugh Bedient | 207 | BOS |
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