| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill James | DET | -3.7 | 191807130_DET_MIN |
| Hugh Canavan | ATL | -2 | 191807130_ATL_CHN |
| Elmer Jacobs | PHI | -1.97 | 191807120_PHI_SLN |
| Jim Shaw | MIN | -1.78 | 191807120_DET_MIN |
| Pete Schneider | CIN | -1.52 | 191807132_LAN_CIN |
Based on accumulated WAA for this season up to 1918-07-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.45 | Walter Johnson | 203.3 | MIN |
| +002+ | 5.14 | Stan Coveleski | 207.7 | CLE |
| +004+ | 4.61 | Hippo Vaughn | 186.3 | CHN |
| +007+ | 3.6 | Carl Mays | 183.3 | BOS |
| +009+ | 3.05 | Bullet Joe Bush | 184.7 | BOS |
| +013+ | 2.78 | Scott Perry | 206.3 | OAK |
| +014+ | 2.72 | Phil Douglas | 78.3 | CHN |
| +020+ | 2.43 | Al Demaree | 111.7 | SFN |
| +021+ | 2.38 | Red Ames | 123.3 | SLN |
| +023+ | 2.21 | Rube Marquard | 158 | LAN |
| +025+ | 2.17 | Pol Perritt | 130.3 | SFN |
| +029+ | 2.11 | Allen Sothoron | 139 | BAL |
| +030+ | 2.01 | Burleigh Grimes | 148.7 | LAN |
| +035+ | 1.88 | Lefty Tyler | 153.7 | CHN |
| +036+ | 1.85 | Jimmy Ring | 38 | CIN |
| +042+ | 1.71 | Harry Harper | 150.3 | MIN |
| +045+ | 1.62 | Frank Shellenback | 114.3 | CHA |
| +044+ | 1.62 | Eddie Cicotte | 170.3 | CHA |
| +047+ | 1.56 | Guy Morton | 148.7 | CLE |
| +051+ | 1.38 | Wilbur Cooper | 161 | PIT |
| XXXXX | 1.17 | Dick Rudolph | 69.3 | ATL |
| XXXXX | 1.1 | Brad Hogg | 130.7 | PHI |
| XXXXX | 1.04 | Paul Carter | 45.7 | CHN |
| XXXXX | 0.95 | George Mogridge | 133 | NYA |
| XXXXX | 0.87 | Roy Sanders | 117.3 | PIT |
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