| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Tyler | ATL | -1.81 | 191205060_ATL_CHN |
| Cliff Curtis | PHI | -1.75 | 191205040_PHI_SFN |
| Frank Smith | CIN | -1.34 | 191205050_CIN_SLN |
| Carl Cashion | MIN | -0.52 | 191205040_BOS_MIN |
| Joe Willis | SLN | -0.45 | 191205050_CIN_SLN |
Based on accumulated WAA for this season up to 1912-05-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.81 | Walter Johnson | 53 | MIN |
| +002+ | 2.78 | Lew Richie | 39.7 | CHN |
| +003+ | 2.54 | George Kahler | 44 | CLE |
| +004+ | 2.11 | Eddie Plank | 36.7 | OAK |
| +006+ | 1.82 | Hub Perdue | 37 | ATL |
| +007+ | 1.8 | Christy Mathewson | 36 | SFN |
| +009+ | 1.71 | Rube Marquard | 31 | SFN |
| +010+ | 1.59 | Buster Brown | 26.3 | ATL |
| +012+ | 1.55 | Charley Hall | 37.3 | BOS |
| +013+ | 1.53 | Marty O'Toole | 35 | PIT |
| +015+ | 1.41 | Maury Kent | 26 | LAN |
| +014+ | 1.41 | Jeff Tesreau | 24 | SFN |
| +016+ | 1.35 | Ed Walsh | 58 | CHA |
| +018+ | 1.28 | Bob Groom | 36 | MIN |
| +019+ | 1.26 | George Mogridge | 21.3 | CHA |
| XXXXX | 1.18 | Ad Brennan | 26 | PHI |
| XXXXX | 1.15 | Eddie Stack | 19.3 | LAN |
| XXXXX | 0.94 | Larry Cheney | 42.3 | CHN |
| XXXXX | 0.9 | Claude Hendrix | 30.7 | PIT |
| XXXXX | 0.78 | Ed Willett | 44 | DET |
| XXXXX | 0.77 | Joe Benz | 23 | CHA |
| XXXXX | 0.69 | Harry Gaspar | 12 | CIN |
| XXXXX | 0.68 | George Suggs | 32.3 | CIN |
| XXXXX | 0.68 | Rube Geyer | 18 | SLN |
| XXXXX | 0.68 | Chief Bender | 22 | OAK |
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