| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Walsh | CHA | 5.41 | 191205130_CHA_OAK |
| Smoky Joe Wood | BOS | 4.15 | 191205150_BAL_BOS |
| Red Ames | SFN | 1.29 | 191205150_SFN_PIT |
| Vean Gregg | CLE | 0.58 | 191205140_CLE_MIN |
| Jack Coombs | OAK | 0.34 | 191205140_CHA_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Warhop | NYA | -2.55 | 191205150_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 |
| Dixie Walker | MIN | -0.59 | 191205130_CLE_MIN |
Based on accumulated WAA for this season up to 1912-05-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.06 | 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+ | 2.25 | Ed Walsh | 74 | CHA |
| +006+ | 2.15 | Slim Sallee | 66.3 | SLN |
| +007+ | 2.01 | Buster Brown | 37 | ATL |
| +008+ | 1.99 | Maury Kent | 41.3 | LAN |
| +009+ | 1.97 | Smoky Joe Wood | 71.7 | BOS |
| +010+ | 1.94 | Joe Benz | 39 | CHA |
| +011+ | 1.93 | Marty O'Toole | 41 | PIT |
| +012+ | 1.92 | Christy Mathewson | 45.7 | SFN |
| +013+ | 1.86 | Larry Cheney | 60.3 | CHN |
| +014+ | 1.81 | George Baumgardner | 40.7 | BAL |
| +015+ | 1.78 | Bob Groom | 59 | MIN |
| +017+ | 1.72 | Red Ames | 35 | SFN |
| +020+ | 1.66 | George Mogridge | 24.7 | CHA |
| +022+ | 1.61 | Jeff Tesreau | 40.3 | SFN |
| +028+ | 1.3 | Eddie Plank | 47.7 | OAK |
| XXXXX | 1.21 | Hub Perdue | 50 | ATL |
| XXXXX | 1.15 | Rube Benton | 41.7 | CIN |
| XXXXX | 1 | Babe Adams | 44.3 | PIT |
| XXXXX | 0.98 | Claude Hendrix | 37.7 | PIT |
| XXXXX | 0.9 | Tom Seaton | 43.3 | PHI |
| XXXXX | 0.74 | Ed Willett | 62 | DET |
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