| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 8.62 | 191205030_BOS_MIN |
| Christy Mathewson | SFN | 5.83 | 191205040_PHI_SFN |
| Eddie Plank | OAK | 5.5 | 191205040_NYA_OAK |
| Babe Adams | PIT | 2.66 | 191205040_CHN_PIT |
| Lew Richie | CHN | 2.12 | 191205050_PIT_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cliff Curtis | PHI | -1.75 | 191205040_PHI_SFN |
| Frank Smith | CIN | -1.34 | 191205050_CIN_SLN |
| John Frill | BAL | -0.85 | 191205030_BAL_DET |
| Boardwalk Brown | OAK | -0.79 | 191205030_NYA_OAK |
| Ray Caldwell | NYA | -0.57 | 191205030_NYA_OAK |
Based on accumulated WAA for this season up to 1912-05-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.83 | Walter Johnson | 53 | MIN |
| +002+ | 2.79 | Lew Richie | 39.7 | CHN |
| +003+ | 2.55 | George Kahler | 44 | CLE |
| +004+ | 2.12 | Eddie Plank | 36.7 | OAK |
| +006+ | 1.83 | Christy Mathewson | 36 | SFN |
| +007+ | 1.81 | Hub Perdue | 37 | ATL |
| +009+ | 1.73 | Rube Marquard | 31 | SFN |
| +011+ | 1.56 | Charley Hall | 37.3 | BOS |
| +012+ | 1.54 | Marty O'Toole | 35 | PIT |
| +013+ | 1.43 | Jeff Tesreau | 24 | SFN |
| +014+ | 1.42 | Maury Kent | 26 | LAN |
| +015+ | 1.36 | Ed Walsh | 58 | CHA |
| +017+ | 1.3 | Buster Brown | 19.3 | ATL |
| +018+ | 1.29 | 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 | 0.91 | Claude Hendrix | 30.7 | PIT |
| XXXXX | 0.84 | Slim Sallee | 39.3 | SLN |
| XXXXX | 0.79 | Ed Willett | 44 | DET |
| XXXXX | 0.78 | Joe Benz | 23 | CHA |
| XXXXX | 0.7 | Larry Cheney | 33.3 | CHN |
| XXXXX | 0.69 | Harry Gaspar | 12 | CIN |
| XXXXX | 0.69 | George Suggs | 32.3 | CIN |
| XXXXX | 0.68 | Rube Geyer | 18 | SLN |
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