| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 10.73 | 191506100_BAL_MIN |
| Jim Scott | CHA | 3.01 | 191506100_CHA_NYA |
| Babe Adams | PIT | 2.41 | 191506120_ATL_PIT |
| Jeff Tesreau | SFN | 1.89 | 191506100_SFN_SLN |
| Rube Foster | BOS | 1.31 | 191506110_DET_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Harry Hoch | BAL | -2.29 | 191506100_BAL_MIN |
| Weldon Wyckoff | OAK | -1.47 | 191506100_CLE_OAK |
| Eppa Rixey | PHI | -1.1 | 191506110_PHI_CHN |
| Rube Benton | CIN | -1.05 | 191506110_LAN_CIN |
| Leon Cadore | LAN | -0.99 | 191506120_LAN_CIN |
Based on accumulated WAA for this season up to 1915-06-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 3.66 | Pete Alexander | 124 | PHI |
| +004+ | 3.36 | Walter Johnson | 113.3 | MIN |
| +008+ | 2.73 | Al Mamaux | 76.7 | PIT |
| +009+ | 2.58 | Erskine Mayer | 102 | PHI |
| +011+ | 2.43 | Bert Humphries | 45.7 | CHN |
| +018+ | 1.96 | Jim Scott | 79.3 | CHA |
| +020+ | 1.88 | Red Faber | 112.7 | CHA |
| +021+ | 1.87 | Guy Morton | 101.3 | CLE |
| +022+ | 1.83 | Reb Russell | 83.7 | CHA |
| +023+ | 1.64 | Tom Hughes | 94 | ATL |
| +025+ | 1.59 | Wheezer Dell | 104 | LAN |
| +026+ | 1.59 | Joe Benz | 77 | CHA |
| +027+ | 1.57 | Jim Shaw | 59.7 | MIN |
| +029+ | 1.43 | Harry Coveleski | 99 | DET |
| +031+ | 1.37 | Rube Foster | 86.3 | BOS |
| +032+ | 1.35 | Dick Rudolph | 96 | ATL |
| +033+ | 1.31 | Hooks Dauss | 113.3 | DET |
| +036+ | 1.26 | Jeff Pfeffer | 67 | LAN |
| XXXXX | 1.25 | Pete Schneider | 57.7 | CIN |
| XXXXX | 1.19 | Ray Fisher | 88.7 | NYA |
| XXXXX | 1.19 | Dan Griner | 79.3 | SLN |
| XXXXX | 1.15 | Ernie Shore | 70 | BOS |
| XXXXX | 1 | Bob Harmon | 76 | PIT |
| XXXXX | 0.9 | Gene Dale | 79.3 | CIN |
| XXXXX | 0.86 | Bert Gallia | 64.7 | MIN |
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