| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 10.5 | 191205170_BAL_MIN |
| Ed Walsh | CHA | 6.6 | 191205170_CHA_BOS |
| Christy Mathewson | SFN | 5.95 | 191205180_SFN_CIN |
| Russ Ford | NYA | 2.86 | 191205170_CLE_NYA |
| Babe Adams | PIT | 2.55 | 191205180_ATL_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Tyler | ATL | -2.48 | 191205180_ATL_PIT |
| Lefty Russell | OAK | -2.26 | 191205170_DET_OAK |
| Bill Steele | SLN | -1.99 | 191205180_PHI_SLN |
| Willie Mitchell | CLE | -1.32 | 191205180_CLE_NYA |
| Elmer Brown | BAL | -1.04 | 191205170_BAL_MIN |
Based on accumulated WAA for this season up to 1912-05-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.64 | Walter Johnson | 76 | MIN |
| +002+ | 3.85 | Rube Marquard | 58 | SFN |
| +003+ | 2.8 | Ed Walsh | 83 | CHA |
| +004+ | 2.73 | Lew Richie | 48.7 | CHN |
| +005+ | 2.64 | Joe Benz | 48 | CHA |
| +006+ | 2.37 | Christy Mathewson | 53.7 | SFN |
| +007+ | 2.36 | George Kahler | 58 | CLE |
| +008+ | 2.36 | Marty O'Toole | 49 | PIT |
| +009+ | 2.25 | Slim Sallee | 66.3 | SLN |
| +010+ | 2.22 | Hub Perdue | 61.3 | ATL |
| +011+ | 2.07 | Buster Brown | 37 | ATL |
| +012+ | 2.06 | Smoky Joe Wood | 71.7 | BOS |
| +013+ | 1.97 | Larry Cheney | 69.3 | CHN |
| +015+ | 1.88 | George Baumgardner | 40.7 | BAL |
| +016+ | 1.79 | Red Ames | 35 | SFN |
| +018+ | 1.7 | George Mogridge | 24.7 | CHA |
| +019+ | 1.68 | Jeff Tesreau | 40.3 | SFN |
| +021+ | 1.63 | Maury Kent | 43.3 | LAN |
| +026+ | 1.43 | Rube Benton | 50.7 | CIN |
| +027+ | 1.36 | Eddie Plank | 47.7 | OAK |
| XXXXX | 1.02 | Claude Hendrix | 37.7 | PIT |
| XXXXX | 0.88 | Vean Gregg | 38.7 | CLE |
| XXXXX | 0.86 | Tom Seaton | 48.7 | PHI |
| XXXXX | 0.85 | Harry Gaspar | 29 | CIN |
| XXXXX | 0.85 | Art Fromme | 49 | CIN |
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