| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 12.47 | 191508100_DET_MIN |
| Jim Scott | CHA | 4.26 | 191508100_CHA_OAK |
| Smoky Joe Wood | BOS | 2.64 | 191508111_BAL_BOS |
| Al Mamaux | PIT | 2.42 | 191508120_SFN_PIT |
| Ray Fisher | NYA | 0.92 | 191508101_CLE_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Bressler | OAK | -6.35 | 191508100_CHA_OAK |
| Bill James | BAL | -2.08 | 191508112_BAL_BOS |
| Jack Warhop | NYA | -1.98 | 191508120_CLE_NYA |
| Rube Marquard | SFN | -1.5 | 191508100_SFN_PIT |
| Roy Walker | CLE | -1.34 | 191508120_CLE_NYA |
Based on accumulated WAA for this season up to 1915-08-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.75 | Pete Alexander | 253.7 | PHI |
| +003+ | 7.07 | Walter Johnson | 236.7 | MIN |
| +007+ | 5.14 | Al Mamaux | 189.3 | PIT |
| +008+ | 5.03 | Jim Scott | 200 | CHA |
| +011+ | 4.31 | Smoky Joe Wood | 132.3 | BOS |
| +015+ | 3.44 | Ray Fisher | 177.7 | NYA |
| +018+ | 3.06 | Guy Morton | 205 | CLE |
| +019+ | 3.01 | Rube Foster | 179.7 | BOS |
| +020+ | 2.98 | Bert Humphries | 114.3 | CHN |
| +023+ | 2.71 | Harry Coveleski | 215.3 | DET |
| +025+ | 2.62 | Ernie Koob | 68.3 | BAL |
| +027+ | 2.58 | Ernie Shore | 154 | BOS |
| +033+ | 2.45 | Bob Harmon | 177.7 | PIT |
| +034+ | 2.45 | Red Faber | 221 | CHA |
| +036+ | 2.43 | Eppa Rixey | 132.7 | PHI |
| +040+ | 2.29 | Gene Dale | 190 | CIN |
| +041+ | 2.17 | Joe Benz | 145 | CHA |
| +043+ | 2.09 | Sherry Smith | 127 | LAN |
| +044+ | 2.07 | Jeff Pfeffer | 168 | LAN |
| +045+ | 2.04 | Bert Gallia | 175 | MIN |
| +049+ | 1.97 | Erskine Mayer | 203.7 | PHI |
| +054+ | 1.82 | Dick Rudolph | 222.3 | ATL |
| +059+ | 1.66 | Jeff Tesreau | 200.7 | SFN |
| +061+ | 1.6 | Carl Weilman | 228 | BAL |
| +063+ | 1.57 | Wheezer Dell | 176.3 | LAN |
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