| Starter | Tm | Tier | Game |
|---|---|---|---|
| Christy Mathewson | SFN | 6.18 | 191209092_LAN_SFN |
| Nap Rucker | LAN | 3.85 | 191209091_LAN_SFN |
| George Suggs | CIN | 1.93 | 191209070_CHN_CIN |
| Marty O'Toole | PIT | 1.46 | 191209080_PIT_SLN |
| Ed Walsh | CHA | 1.31 | 191209080_CLE_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Russ Ford | NYA | -3.74 | 191209070_OAK_NYA |
| Elmer Knetzer | LAN | -2.01 | 191209072_ATL_LAN |
| Mack Allison | BAL | -1.68 | 191209070_BAL_DET |
| Ed Willett | DET | -1.15 | 191209080_BAL_DET |
| Willie Mitchell | CLE | -1.08 | 191209080_CLE_CHA |
Based on accumulated WAA for this season up to 1912-09-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.5 | Walter Johnson | 322.7 | MIN |
| +002+ | 12.05 | Christy Mathewson | 275 | SFN |
| +004+ | 9.67 | Nap Rucker | 250.3 | LAN |
| +005+ | 9.17 | Slim Sallee | 271.7 | SLN |
| +006+ | 8.72 | Smoky Joe Wood | 303 | BOS |
| +007+ | 8.51 | Rube Marquard | 261.7 | SFN |
| +008+ | 8.06 | Claude Hendrix | 260.3 | PIT |
| +010+ | 7.11 | Art Fromme | 245.7 | CIN |
| +012+ | 6.87 | Jeff Tesreau | 186.7 | SFN |
| +014+ | 6.67 | George Suggs | 252.3 | CIN |
| +016+ | 6.3 | Rube Benton | 259.7 | CIN |
| +017+ | 6.06 | Pete Alexander | 268 | PHI |
| +018+ | 5.86 | Larry Cheney | 247 | CHN |
| +019+ | 5.69 | Marty O'Toole | 236.3 | PIT |
| +021+ | 5.59 | Ed Walsh | 344 | CHA |
| +022+ | 5.51 | Lew Richie | 217.7 | CHN |
| +023+ | 5.44 | Red Ames | 159.7 | SFN |
| +024+ | 5.29 | Eppa Rixey | 134.7 | PHI |
| +027+ | 5.08 | Hank Robinson | 150 | PIT |
| +028+ | 4.97 | Jimmy Lavender | 223.3 | CHN |
| +037+ | 3.65 | Eddie Plank | 222 | OAK |
| +039+ | 3.55 | Ray Collins | 155.3 | BOS |
| +051+ | 2.71 | Hooks Wiltse | 127.7 | SFN |
| +060+ | 2.38 | Vean Gregg | 233 | CLE |
| +065+ | 2.14 | Hub Perdue | 224.3 | ATL |
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