| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 11.63 | 191505170_MIN_BAL |
| Eddie Cicotte | CHA | 5.5 | 191505190_OAK_CHA |
| Jeff Tesreau | SFN | 5.35 | 191505180_CHN_SFN |
| Rube Foster | BOS | 2.26 | 191505190_BOS_CLE |
| Bill James | ATL | 1.48 | 191505180_PIT_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bullet Joe Bush | OAK | -4.17 | 191505180_OAK_CHA |
| Bob Harmon | PIT | -1.52 | 191505180_PIT_ATL |
| Hub Perdue | SLN | -1.48 | 191505170_SLN_PHI |
| George Chalmers | PHI | -1.27 | 191505190_SLN_PHI |
| Pat Ragan | ATL | -1.16 | 191505190_PIT_ATL |
Based on accumulated WAA for this season up to 1915-05-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.87 | Pete Alexander | 71 | PHI |
| +003+ | 2.37 | Walter Johnson | 68.3 | MIN |
| +006+ | 1.86 | Guy Morton | 62 | CLE |
| +007+ | 1.67 | Jeff Tesreau | 52.7 | SFN |
| +009+ | 1.62 | George Chalmers | 43 | PHI |
| +010+ | 1.61 | Tom Hughes | 52 | ATL |
| +012+ | 1.58 | Wheezer Dell | 57 | LAN |
| +014+ | 1.51 | Erskine Mayer | 57 | PHI |
| +015+ | 1.5 | Ray Fisher | 54 | NYA |
| +017+ | 1.48 | Sailor Stroud | 34.3 | SFN |
| +019+ | 1.41 | Grover Lowdermilk | 77.7 | BAL |
| +022+ | 1.36 | Bert Gallia | 41.3 | MIN |
| +024+ | 1.31 | Jim Shaw | 31.3 | MIN |
| +026+ | 1.3 | Jack Coombs | 31.3 | LAN |
| +028+ | 1.26 | Hooks Dauss | 62.7 | DET |
| +027+ | 1.26 | Red Faber | 72.3 | CHA |
| XXXXX | 1.24 | Dan Griner | 44 | SLN |
| XXXXX | 1.17 | Bernie Boland | 52 | DET |
| XXXXX | 1 | Bob Shawkey | 52 | OAK |
| XXXXX | 0.98 | Jim Scott | 36.7 | CHA |
| XXXXX | 0.95 | Jean Dubuc | 64.3 | DET |
| XXXXX | 0.95 | Smoky Joe Wood | 15 | BOS |
| XXXXX | 0.94 | Rube Foster | 54.3 | BOS |
| XXXXX | 0.91 | Harry Coveleski | 60.7 | DET |
| XXXXX | 0.9 | Al Mamaux | 40.7 | PIT |
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