| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 10.44 | 191505230_MIN_CLE |
| Ray Caldwell | NYA | 1.85 | 191505230_NYA_BAL |
| Jim Scott | CHA | 1.7 | 191505230_BOS_CHA |
| Hippo Vaughn | CHN | 0.61 | 191505220_CHN_ATL |
| Smoky Joe Wood | BOS | 0.41 | 191505230_BOS_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Herb Pennock | OAK | -2.87 | 191505230_OAK_DET |
| Jimmy Lavender | CHN | -2.22 | 191505210_CHN_ATL |
| Bill James | BAL | -0.98 | 191505220_NYA_BAL |
| Babe Ruth | BOS | -0.87 | 191505220_BOS_CHA |
| Jean Dubuc | DET | -0.29 | 191505220_OAK_DET |
Based on accumulated WAA for this season up to 1915-05-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.76 | Walter Johnson | 77.3 | MIN |
| +003+ | 2.67 | Pete Alexander | 80 | PHI |
| +005+ | 2.01 | Wheezer Dell | 66 | LAN |
| +009+ | 1.83 | Red Faber | 82.3 | CHA |
| +010+ | 1.8 | Jim Shaw | 38.7 | MIN |
| +011+ | 1.75 | Guy Morton | 70 | CLE |
| +013+ | 1.69 | Jeff Tesreau | 52.7 | SFN |
| +014+ | 1.64 | George Chalmers | 43 | PHI |
| +015+ | 1.62 | Tom Hughes | 61 | ATL |
| +016+ | 1.54 | Erskine Mayer | 57 | PHI |
| +018+ | 1.5 | Grover Lowdermilk | 84.7 | BAL |
| +019+ | 1.5 | Sailor Stroud | 34.3 | SFN |
| +021+ | 1.38 | Jean Dubuc | 73.3 | DET |
| +022+ | 1.35 | Bert Gallia | 41.3 | MIN |
| +025+ | 1.31 | Ray Fisher | 62.7 | NYA |
| +024+ | 1.31 | Jack Coombs | 31.3 | LAN |
| +028+ | 1.26 | Dan Griner | 44 | SLN |
| XXXXX | 1.17 | Joe Benz | 46.7 | CHA |
| XXXXX | 1.1 | Jim Scott | 45.7 | CHA |
| XXXXX | 1.04 | Bill James | 34 | ATL |
| XXXXX | 0.94 | Harry Coveleski | 60.7 | DET |
| XXXXX | 0.92 | Al Mamaux | 40.7 | PIT |
| XXXXX | 0.92 | Ray Keating | 29 | NYA |
| XXXXX | 0.91 | Rube Foster | 54.3 | BOS |
| XXXXX | 0.84 | Bert Humphries | 12.7 | CHN |
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