| Starter | Tm | Tier | Game |
|---|---|---|---|
| Christy Mathewson | SFN | 6.18 | 191209092_LAN_SFN |
| Nap Rucker | LAN | 3.85 | 191209091_LAN_SFN |
| Slim Sallee | SLN | 3.8 | 191209100_SLN_SFN |
| Smoky Joe Wood | BOS | 3.38 | 191209100_BOS_CHA |
| Art Fromme | CIN | 2.07 | 191209100_CIN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| George McConnell | NYA | -1.51 | 191209100_NYA_BAL |
| Carl Cashion | MIN | -1.4 | 191209100_MIN_CLE |
| Ed Willett | DET | -1.15 | 191209080_BAL_DET |
| Willie Mitchell | CLE | -1.08 | 191209080_CLE_CHA |
| Bill Steele | SLN | -0.74 | 191209080_PIT_SLN |
Based on accumulated WAA for this season up to 1912-09-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.53 | Walter Johnson | 322.7 | MIN |
| +002+ | 12.07 | Christy Mathewson | 275 | SFN |
| +004+ | 9.69 | Nap Rucker | 250.3 | LAN |
| +005+ | 9.02 | Slim Sallee | 278.7 | SLN |
| +006+ | 8.95 | Rube Marquard | 270.7 | SFN |
| +007+ | 8.84 | Smoky Joe Wood | 311 | BOS |
| +009+ | 7.96 | Art Fromme | 254.7 | CIN |
| +012+ | 6.89 | Jeff Tesreau | 186.7 | SFN |
| +013+ | 6.69 | George Suggs | 252.3 | CIN |
| +016+ | 6.32 | Rube Benton | 259.7 | CIN |
| +018+ | 6.08 | Larry Cheney | 256 | CHN |
| +017+ | 6.08 | Pete Alexander | 268 | PHI |
| +019+ | 5.72 | Marty O'Toole | 236.3 | PIT |
| +021+ | 5.63 | Ed Walsh | 344 | CHA |
| +022+ | 5.53 | Lew Richie | 217.7 | CHN |
| +023+ | 5.45 | Red Ames | 159.7 | SFN |
| +024+ | 5.31 | Eppa Rixey | 134.7 | PHI |
| +027+ | 5.09 | Hank Robinson | 150 | PIT |
| +028+ | 4.99 | Jimmy Lavender | 223.3 | CHN |
| +037+ | 3.69 | Eddie Plank | 222 | OAK |
| +039+ | 3.57 | Ray Collins | 155.3 | BOS |
| +041+ | 3.2 | Babe Adams | 152.3 | PIT |
| +052+ | 2.72 | Hooks Wiltse | 127.7 | SFN |
| +059+ | 2.4 | Vean Gregg | 233 | CLE |
| +062+ | 2.27 | Earl Moore | 170 | PHI |
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