| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 10.5 | 191205170_BAL_MIN |
| Ed Walsh | CHA | 6.6 | 191205170_CHA_BOS |
| Smoky Joe Wood | BOS | 4.15 | 191205150_BAL_BOS |
| Russ Ford | NYA | 2.86 | 191205170_CLE_NYA |
| George Kahler | CLE | 1.45 | 191205170_CLE_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Warhop | NYA | -2.55 | 191205150_DET_NYA |
| Lefty Russell | OAK | -2.26 | 191205170_DET_OAK |
| Elmer Brown | BAL | -1.04 | 191205170_BAL_MIN |
| Joe Willis | SLN | -1.03 | 191205150_LAN_SLN |
| Eddie Stack | LAN | -0.5 | 191205150_LAN_SLN |
Based on accumulated WAA for this season up to 1912-05-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.52 | Walter Johnson | 76 | MIN |
| +002+ | 3.73 | Rube Marquard | 58 | SFN |
| +003+ | 2.66 | Ed Walsh | 83 | CHA |
| +004+ | 2.65 | Lew Richie | 48.7 | CHN |
| +005+ | 2.3 | George Kahler | 58 | CLE |
| +006+ | 2.29 | Marty O'Toole | 49 | PIT |
| +007+ | 2.14 | Slim Sallee | 66.3 | SLN |
| +008+ | 2 | Buster Brown | 37 | ATL |
| +009+ | 1.97 | Maury Kent | 41.3 | LAN |
| +010+ | 1.95 | Smoky Joe Wood | 71.7 | BOS |
| +011+ | 1.94 | Joe Benz | 39 | CHA |
| +012+ | 1.91 | Christy Mathewson | 45.7 | SFN |
| +013+ | 1.85 | Larry Cheney | 60.3 | CHN |
| +014+ | 1.82 | George Baumgardner | 40.7 | BAL |
| +015+ | 1.76 | Bob Groom | 59 | MIN |
| +017+ | 1.71 | Red Ames | 35 | SFN |
| +021+ | 1.67 | Hub Perdue | 57 | ATL |
| +022+ | 1.66 | George Mogridge | 24.7 | CHA |
| +024+ | 1.6 | Jeff Tesreau | 40.3 | SFN |
| +029+ | 1.28 | Eddie Plank | 47.7 | OAK |
| XXXXX | 1.14 | Rube Benton | 41.7 | CIN |
| XXXXX | 0.99 | Babe Adams | 44.3 | PIT |
| XXXXX | 0.96 | Claude Hendrix | 37.7 | PIT |
| XXXXX | 0.8 | Harry Gaspar | 29 | CIN |
| XXXXX | 0.79 | Tom Seaton | 48.7 | PHI |
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