| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 10.08 | 191205251_MIN_NYA |
| Ed Walsh | CHA | 7.43 | 191205250_DET_CHA |
| Smoky Joe Wood | BOS | 5.04 | 191205250_OAK_BOS |
| Chief Bender | OAK | 3.21 | 191205230_BAL_OAK |
| Rube Marquard | SFN | 2.45 | 191205240_SFN_LAN |
| 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 |
| Lefty George | CLE | -1.55 | 191205230_CLE_BOS |
| Hippo Vaughn | NYA | -0.87 | 191205252_MIN_NYA |
Based on accumulated WAA for this season up to 1912-05-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.22 | Rube Marquard | 76 | SFN |
| +002+ | 4.75 | Walter Johnson | 93 | MIN |
| +004+ | 3.34 | Ed Walsh | 103.3 | CHA |
| +005+ | 3.07 | Hooks Wiltse | 31 | SFN |
| +006+ | 3.06 | Christy Mathewson | 62.7 | SFN |
| +007+ | 2.74 | Marty O'Toole | 57 | PIT |
| +008+ | 2.47 | Joe Benz | 55.7 | CHA |
| +009+ | 2.22 | Lew Richie | 55.7 | CHN |
| +010+ | 2.14 | Smoky Joe Wood | 91.7 | BOS |
| +011+ | 2.09 | Hub Perdue | 73.7 | ATL |
| +012+ | 2.08 | Red Ames | 44.3 | SFN |
| +014+ | 2.01 | Ad Brennan | 51.7 | PHI |
| +017+ | 1.89 | Larry Cheney | 78.3 | CHN |
| +018+ | 1.88 | Jeff Tesreau | 42.3 | SFN |
| +020+ | 1.76 | Rube Benton | 64.3 | CIN |
| +022+ | 1.67 | Walt Dickson | 30.7 | ATL |
| +024+ | 1.63 | Babe Adams | 56.3 | PIT |
| +027+ | 1.56 | Claude Hendrix | 55.7 | PIT |
| +028+ | 1.51 | Eddie Plank | 51 | OAK |
| +032+ | 1.4 | George Baumgardner | 43.7 | BAL |
| +033+ | 1.4 | Charley Hall | 52.3 | BOS |
| XXXXX | 1.21 | Buster Brown | 46.7 | ATL |
| XXXXX | 1.12 | Tom Seaton | 63.3 | PHI |
| XXXXX | 1.07 | George Mogridge | 25 | CHA |
| XXXXX | 1.06 | Vean Gregg | 46.7 | CLE |
_