| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Walsh | CHA | 5.41 | 191205130_CHA_OAK |
| George Kahler | CLE | 1.11 | 191205120_MIN_CLE |
| Jack Coombs | OAK | 0.34 | 191205140_CHA_OAK |
| Slim Sallee | SLN | 0.34 | 191205140_LAN_SLN |
| Nap Rucker | LAN | 0.31 | 191205120_LAN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Tyler | ATL | -2.67 | 191205120_ATL_SLN |
| Ray Caldwell | NYA | -1.86 | 191205140_DET_NYA |
| Bob Ewing | SLN | -1.21 | 191205130_ATL_SLN |
| Boardwalk Brown | OAK | -1.05 | 191205130_CHA_OAK |
| Ralph Works | DET | -0.75 | 191205130_DET_NYA |
Based on accumulated WAA for this season up to 1912-05-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.07 | Walter Johnson | 67 | MIN |
| +002+ | 3.27 | George Kahler | 53 | CLE |
| +003+ | 2.87 | Rube Marquard | 49 | SFN |
| +004+ | 2.59 | Lew Richie | 45.7 | CHN |
| +005+ | 2.22 | Ed Walsh | 74 | CHA |
| +006+ | 2.15 | Slim Sallee | 66.3 | SLN |
| +007+ | 1.98 | Maury Kent | 41.3 | LAN |
| +008+ | 1.94 | Marty O'Toole | 41 | PIT |
| +009+ | 1.92 | Joe Benz | 39 | CHA |
| +010+ | 1.92 | Christy Mathewson | 45.7 | SFN |
| +011+ | 1.86 | Larry Cheney | 60.3 | CHN |
| +012+ | 1.8 | George Baumgardner | 40.7 | BAL |
| +013+ | 1.79 | Bob Groom | 59 | MIN |
| +018+ | 1.62 | George Mogridge | 24.3 | CHA |
| +019+ | 1.61 | Jeff Tesreau | 40.3 | SFN |
| +020+ | 1.6 | Buster Brown | 26.3 | ATL |
| +026+ | 1.3 | Smoky Joe Wood | 62.7 | BOS |
| +027+ | 1.27 | Red Ames | 26 | SFN |
| +028+ | 1.26 | Hub Perdue | 50 | ATL |
| XXXXX | 1.19 | Eddie Stack | 25.7 | LAN |
| XXXXX | 1.18 | Rube Benton | 41.7 | CIN |
| XXXXX | 1.1 | Eddie Plank | 45.7 | OAK |
| XXXXX | 1.01 | Babe Adams | 44.3 | PIT |
| XXXXX | 0.98 | Claude Hendrix | 37.7 | PIT |
| XXXXX | 0.9 | Tom Seaton | 43.3 | PHI |
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