| 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 |
| Eddie Plank | OAK | 2.95 | 191205270_OAK_BOS |
| Babe Adams | PIT | 2.61 | 191205270_SLN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Caldwell | NYA | -2.33 | 191205270_MIN_NYA |
| Lefty Tyler | ATL | -1.85 | 191205271_ATL_PHI |
| Cliff Curtis | PHI | -1.07 | 191205272_ATL_PHI |
| Ralph Works | DET | -0.96 | 191205250_DET_CHA |
| Bob Harmon | SLN | -0.82 | 191205260_CIN_SLN |
Based on accumulated WAA for this season up to 1912-05-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.18 | Rube Marquard | 76 | SFN |
| +002+ | 4.72 | Walter Johnson | 93 | MIN |
| +004+ | 3.39 | Marty O'Toole | 66 | PIT |
| +005+ | 3.31 | Ed Walsh | 103.3 | CHA |
| +006+ | 3.06 | Hooks Wiltse | 31 | SFN |
| +007+ | 3.03 | Christy Mathewson | 62.7 | SFN |
| +008+ | 2.53 | Red Ames | 53.3 | SFN |
| +009+ | 2.32 | Rube Benton | 70.7 | CIN |
| +010+ | 2.27 | Hub Perdue | 75.7 | ATL |
| +011+ | 2.26 | Ad Brennan | 60.7 | PHI |
| +012+ | 2.26 | Joe Benz | 62.7 | CHA |
| +013+ | 2.2 | Lew Richie | 55.7 | CHN |
| +016+ | 2.1 | Larry Cheney | 87.3 | CHN |
| +017+ | 2.09 | Smoky Joe Wood | 91.7 | BOS |
| +020+ | 1.91 | Buster Brown | 53.7 | ATL |
| +021+ | 1.86 | Jeff Tesreau | 42.3 | SFN |
| +025+ | 1.66 | Walt Dickson | 30.7 | ATL |
| +026+ | 1.53 | Claude Hendrix | 55.7 | PIT |
| +033+ | 1.38 | George Baumgardner | 43.7 | BAL |
| +035+ | 1.37 | Charley Hall | 52.3 | BOS |
| +038+ | 1.29 | Vean Gregg | 55.7 | CLE |
| XXXXX | 1.25 | Eddie Plank | 55 | OAK |
| XXXXX | 1.17 | Chief Bender | 33 | OAK |
| XXXXX | 1.13 | Art Fromme | 67 | CIN |
| XXXXX | 1.07 | George Mogridge | 25 | CHA |
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