| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 15.61 | 191507132_MIN_BAL |
| Pete Alexander | PHI | 11.62 | 191507130_SLN_PHI |
| Jim Scott | CHA | 2.77 | 191507130_OAK_CHA |
| Smoky Joe Wood | BOS | 2.22 | 191507141_BOS_CLE |
| Bob Harmon | PIT | 1.28 | 191507132_PIT_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roy Walker | CLE | -2.72 | 191507131_BOS_CLE |
| Rube Bressler | OAK | -2.14 | 191507150_OAK_CHA |
| Ray Collins | BOS | -1.76 | 191507142_BOS_CLE |
| Phil Douglas | LAN | -1.16 | 191507150_CIN_LAN |
| Jack Warhop | NYA | -1.15 | 191507131_NYA_DET |
Based on accumulated WAA for this season up to 1915-07-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.37 | Pete Alexander | 198 | PHI |
| +003+ | 6.38 | Walter Johnson | 177.7 | MIN |
| +008+ | 3.98 | Al Mamaux | 135.7 | PIT |
| +012+ | 3.35 | Jim Scott | 145.7 | CHA |
| +013+ | 3.32 | Smoky Joe Wood | 93.7 | BOS |
| +016+ | 3 | Bob Harmon | 139.7 | PIT |
| +017+ | 2.95 | Erskine Mayer | 157.7 | PHI |
| +020+ | 2.72 | Red Faber | 183 | CHA |
| +024+ | 2.36 | Jack Coombs | 96 | LAN |
| +025+ | 2.36 | Sherry Smith | 96 | LAN |
| +032+ | 2 | Wheezer Dell | 147.7 | LAN |
| +033+ | 1.99 | Bert Humphries | 73.3 | CHN |
| +034+ | 1.97 | Gene Dale | 133.7 | CIN |
| +035+ | 1.93 | Guy Morton | 159 | CLE |
| +037+ | 1.89 | Bill Doak | 157.3 | SLN |
| +038+ | 1.84 | Hank Robinson | 84 | SLN |
| +039+ | 1.83 | Hooks Dauss | 159.3 | DET |
| +041+ | 1.82 | Fred Toney | 68.3 | CIN |
| +042+ | 1.81 | Pat Ragan | 123.7 | TOT |
| +046+ | 1.67 | Sailor Stroud | 97.7 | SFN |
| +049+ | 1.64 | Eppa Rixey | 101.3 | PHI |
| +055+ | 1.48 | Jeff Pfeffer | 130.3 | LAN |
| +056+ | 1.46 | Harry Coveleski | 160 | DET |
| +058+ | 1.44 | Ernie Shore | 112.7 | BOS |
| +060+ | 1.44 | Joe Benz | 114.3 | CHA |
_