| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Russell | OAK | -2.26 | 191205240_OAK_BOS |
| Bill Steele | SLN | -2.21 | 191205230_CIN_SLN |
| Bill Burns | DET | -2.12 | 191205230_DET_MIN |
| Ray Caldwell | NYA | -1.63 | 191205220_CHA_NYA |
| Lefty George | CLE | -1.55 | 191205230_CLE_BOS |
Based on accumulated WAA for this season up to 1912-05-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.2 | Rube Marquard | 76 | SFN |
| +002+ | 5.12 | Walter Johnson | 85 | MIN |
| +003+ | 3.73 | Ed Walsh | 96.3 | CHA |
| +004+ | 3.34 | Slim Sallee | 77.3 | SLN |
| +005+ | 3.05 | Christy Mathewson | 62.7 | SFN |
| +006+ | 2.91 | Smoky Joe Wood | 82.7 | BOS |
| +007+ | 2.73 | Marty O'Toole | 57 | PIT |
| +008+ | 2.58 | Joe Benz | 55.7 | CHA |
| +010+ | 2.19 | Lew Richie | 55.7 | CHN |
| +012+ | 2.08 | Hub Perdue | 65.7 | ATL |
| +013+ | 2.07 | Red Ames | 44.3 | SFN |
| +014+ | 2.01 | Ad Brennan | 51.7 | PHI |
| +016+ | 1.88 | Jeff Tesreau | 42.3 | SFN |
| +017+ | 1.84 | Larry Cheney | 78.3 | CHN |
| +020+ | 1.72 | Rube Benton | 64.3 | CIN |
| +021+ | 1.66 | Walt Dickson | 30.7 | ATL |
| +022+ | 1.62 | Babe Adams | 56.3 | PIT |
| +025+ | 1.55 | Claude Hendrix | 55.7 | PIT |
| +027+ | 1.5 | Eddie Plank | 51 | OAK |
| +031+ | 1.39 | George Baumgardner | 43.7 | BAL |
| +032+ | 1.39 | Charley Hall | 52.3 | BOS |
| +035+ | 1.31 | George Kahler | 66 | CLE |
| XXXXX | 1.21 | Maury Kent | 45.3 | LAN |
| XXXXX | 1.19 | Buster Brown | 46.7 | ATL |
| XXXXX | 1.13 | George Mogridge | 25 | CHA |
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