| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 7.21 | 191508221_MIN_DET |
| Jim Scott | CHA | 3.32 | 191508240_MIN_CHA |
| Rube Foster | BOS | 1.32 | 191508221_BOS_BAL |
| Guy Morton | CLE | 1.12 | 191508240_NYA_CLE |
| Harry Coveleski | DET | 0.96 | 191508240_BOS_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Shawkey | NYA | -3.1 | 191508230_NYA_CHA |
| Red Ames | SLN | -2.04 | 191508231_SLN_SFN |
| Grover Lowdermilk | BAL | -1.56 | 191508222_BOS_BAL |
| Joe Boehling | MIN | -1.4 | 191508240_MIN_CHA |
| Larry Cheney | CHN | -1.2 | 191508231_CHN_PHI |
Based on accumulated WAA for this season up to 1915-08-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.02 | Pete Alexander | 283 | PHI |
| +003+ | 7.12 | Walter Johnson | 261.7 | MIN |
| +009+ | 5.14 | Al Mamaux | 197.3 | PIT |
| +013+ | 4.73 | Jim Scott | 227.7 | CHA |
| +014+ | 4.12 | Guy Morton | 223 | CLE |
| +016+ | 3.71 | Rube Foster | 194.7 | BOS |
| +018+ | 3.66 | Ernie Shore | 181 | BOS |
| +019+ | 3.65 | Ray Fisher | 195.7 | NYA |
| +020+ | 3.6 | Harry Coveleski | 240.3 | DET |
| +022+ | 3.13 | Bert Humphries | 117 | CHN |
| +023+ | 3.09 | Fred Toney | 144 | CIN |
| +024+ | 3.02 | Gene Dale | 218.7 | CIN |
| +025+ | 3.01 | Red Faber | 249.3 | CHA |
| +031+ | 2.78 | Hooks Dauss | 234.3 | DET |
| +033+ | 2.7 | Joe Benz | 168.3 | CHA |
| +038+ | 2.65 | Bert Gallia | 189 | MIN |
| +039+ | 2.59 | Jeff Tesreau | 223.7 | SFN |
| +043+ | 2.44 | Jack Coombs | 153 | LAN |
| +045+ | 2.42 | Eppa Rixey | 153 | PHI |
| +047+ | 2.24 | Reb Russell | 161.3 | CHA |
| +048+ | 2.21 | Bob Harmon | 203.7 | PIT |
| +049+ | 2.17 | Ernie Koob | 84.3 | BAL |
| +052+ | 1.99 | Wheezer Dell | 191 | LAN |
| +058+ | 1.87 | Pat Ragan | 202 | TOT |
| +059+ | 1.85 | Tom Hughes | 198.3 | ATL |
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