| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Shawkey | NYA | -4.02 | 191509020_NYA_MIN |
| Red Ames | SLN | -2.26 | 191509040_SLN_CIN |
| Phil Douglas | LAN | -1.5 | 191509030_LAN_ATL |
| Bullet Joe Bush | OAK | -1.1 | 191509040_BOS_OAK |
| Hippo Vaughn | CHN | -0.99 | 191509041_CHN_PIT |
Based on accumulated WAA for this season up to 1915-09-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.09 | Pete Alexander | 309.3 | PHI |
| +003+ | 7.8 | Walter Johnson | 282.7 | MIN |
| +010+ | 4.73 | Jim Scott | 244.7 | CHA |
| +016+ | 4.22 | Al Mamaux | 220.7 | PIT |
| +015+ | 4.22 | Ernie Shore | 196 | BOS |
| +018+ | 3.84 | Harry Coveleski | 261.3 | DET |
| +019+ | 3.76 | Rube Foster | 211.7 | BOS |
| +022+ | 3.65 | Fred Toney | 160 | CIN |
| +024+ | 3.5 | Ray Fisher | 221 | NYA |
| +027+ | 3.24 | Gene Dale | 242.7 | CIN |
| +028+ | 3.16 | Jeff Tesreau | 241.7 | SFN |
| +038+ | 2.73 | Hooks Dauss | 260.3 | DET |
| +037+ | 2.73 | Bert Humphries | 126 | CHN |
| +039+ | 2.69 | Dick Rudolph | 274.3 | ATL |
| +042+ | 2.56 | Red Faber | 266.3 | CHA |
| +045+ | 2.44 | Bob Harmon | 228.7 | PIT |
| +047+ | 2.37 | Ernie Koob | 108.3 | BAL |
| +048+ | 2.36 | Joe Benz | 188.7 | CHA |
| +051+ | 2.27 | Bert Gallia | 211 | MIN |
| +052+ | 2.25 | Jeff Pfeffer | 206.7 | LAN |
| +053+ | 2.24 | Jimmy Lavender | 173.3 | CHN |
| +055+ | 2.22 | Tom Hughes | 214.7 | ATL |
| +062+ | 1.88 | Pat Ragan | 219 | TOT |
| +063+ | 1.86 | Reb Russell | 190.7 | CHA |
| +065+ | 1.82 | Pete Schneider | 220.3 | CIN |
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