| Starter | Tm | Tier | Game |
|---|---|---|---|
| Christy Mathewson | SFN | 5.4 | 191208270_SFN_CIN |
| Nap Rucker | LAN | 4.3 | 191208260_LAN_CHN |
| Claude Hendrix | PIT | 2.88 | 191208261_ATL_PIT |
| Ed Walsh | CHA | 1.84 | 191208260_CHA_BOS |
| Rube Benton | CIN | 1.23 | 191208260_SFN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| King Cole | PIT | -1.87 | 191208262_ATL_PIT |
| George McConnell | NYA | -1.84 | 191208271_CLE_NYA |
| Mack Allison | BAL | -1.82 | 191208261_BAL_MIN |
| Carl Cashion | MIN | -1.42 | 191208270_BAL_MIN |
| Otto Hess | ATL | -0.97 | 191208261_ATL_PIT |
Based on accumulated WAA for this season up to 1912-08-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 14.18 | Walter Johnson | 295.7 | MIN |
| +002+ | 10.41 | Christy Mathewson | 244 | SFN |
| +003+ | 9.56 | Nap Rucker | 229.7 | LAN |
| +005+ | 8.6 | Rube Marquard | 242.7 | SFN |
| +006+ | 8.15 | Claude Hendrix | 247.7 | PIT |
| +007+ | 7.78 | Slim Sallee | 246.7 | SLN |
| +009+ | 6.77 | Rube Benton | 237.7 | CIN |
| +010+ | 6.69 | Smoky Joe Wood | 276 | BOS |
| +011+ | 6.65 | Art Fromme | 223 | CIN |
| +012+ | 6.61 | Ed Walsh | 321 | CHA |
| +013+ | 6.43 | Marty O'Toole | 222 | PIT |
| +015+ | 6.29 | Pete Alexander | 246 | PHI |
| +018+ | 5.84 | George Suggs | 223.3 | CIN |
| +019+ | 5.52 | Lew Richie | 194.7 | CHN |
| +020+ | 5.2 | Howie Camnitz | 224.7 | PIT |
| +021+ | 5.14 | Jimmy Lavender | 197.3 | CHN |
| +022+ | 5.11 | Larry Cheney | 229 | CHN |
| +023+ | 4.84 | Jeff Tesreau | 150.7 | SFN |
| +031+ | 3.85 | Hooks Wiltse | 124.3 | SFN |
| +033+ | 3.83 | Eddie Plank | 200.7 | OAK |
| +032+ | 3.83 | Red Ames | 137.7 | SFN |
| +036+ | 3.59 | Eppa Rixey | 106.7 | PHI |
| +045+ | 3.07 | Bert Humphries | 158 | CIN |
| +046+ | 3.03 | Babe Adams | 127.3 | PIT |
| +050+ | 2.76 | Ray Collins | 137.3 | BOS |
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