| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bullet Joe Bush | OAK | -4.92 | 191506090_CLE_OAK |
| Phil Douglas | CIN | -1.54 | 191506090_LAN_CIN |
| Eppa Rixey | PHI | -1.36 | 191506070_PHI_SLN |
| George McQuillan | PIT | -1.16 | 191506080_LAN_PIT |
| Jimmy Lavender | CHN | -1.14 | 191506080_SFN_CHN |
Based on accumulated WAA for this season up to 1915-06-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.56 | Pete Alexander | 124 | PHI |
| +005+ | 3.1 | Walter Johnson | 104.3 | MIN |
| +006+ | 2.68 | Al Mamaux | 76.7 | PIT |
| +009+ | 2.46 | Red Faber | 107.3 | CHA |
| +016+ | 2.12 | Jim Scott | 70.3 | CHA |
| +017+ | 2.06 | Harry Coveleski | 96.7 | DET |
| +018+ | 1.88 | Erskine Mayer | 93 | PHI |
| +019+ | 1.86 | Smoky Joe Wood | 49 | BOS |
| +020+ | 1.82 | Reb Russell | 81.7 | CHA |
| +021+ | 1.8 | Bert Humphries | 36.7 | CHN |
| +023+ | 1.54 | Jim Shaw | 59.7 | MIN |
| +024+ | 1.52 | Tom Hughes | 87 | ATL |
| +027+ | 1.42 | Jeff Pfeffer | 67 | LAN |
| +028+ | 1.4 | Joe Benz | 69 | CHA |
| +029+ | 1.38 | Pete Schneider | 57.7 | CIN |
| +030+ | 1.37 | Ray Fisher | 79.7 | NYA |
| +031+ | 1.35 | Jean Dubuc | 111.7 | DET |
| +033+ | 1.3 | Wheezer Dell | 90 | LAN |
| +035+ | 1.27 | Dick Rudolph | 96 | ATL |
| XXXXX | 1.25 | Hooks Dauss | 103.7 | DET |
| XXXXX | 1.18 | Jack Coombs | 57.3 | LAN |
| XXXXX | 1.17 | Guy Morton | 92.3 | CLE |
| XXXXX | 1.16 | Dan Griner | 70.3 | SLN |
| XXXXX | 1.14 | Rube Foster | 77.3 | BOS |
| XXXXX | 1.09 | Zip Zabel | 60.7 | CHN |
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