| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 16.02 | 191807042_NYA_MIN |
| Hippo Vaughn | CHN | 6.52 | 191807021_CHN_SLN |
| Carl Mays | BOS | 3.98 | 191807042_BOS_OAK |
| Stan Coveleski | CLE | 2.93 | 191807041_BAL_CLE |
| Eddie Cicotte | CHA | 2.6 | 191807021_DET_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill James | DET | -4.02 | 191807042_DET_CHA |
| Jack Coombs | LAN | -2.05 | 191807042_LAN_SFN |
| Ray Caldwell | NYA | -1.27 | 191807042_NYA_MIN |
| Elmer Jacobs | PHI | -1.06 | 191807020_PHI_SFN |
| Gene Packard | SLN | -0.78 | 191807030_CHN_SLN |
Based on accumulated WAA for this season up to 1918-07-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.27 | Walter Johnson | 185.3 | MIN |
| +002+ | 4.63 | Hippo Vaughn | 158 | CHN |
| +004+ | 3.97 | Stan Coveleski | 189.3 | CLE |
| +008+ | 2.93 | Carl Mays | 165.3 | BOS |
| +009+ | 2.87 | Dana Fillingim | 97 | ATL |
| +015+ | 2.51 | Burleigh Grimes | 126.7 | LAN |
| +017+ | 2.45 | Bullet Joe Bush | 154.7 | BOS |
| +020+ | 2.34 | Red Ames | 114.3 | SLN |
| +022+ | 2.24 | Rube Marquard | 142 | LAN |
| +024+ | 2.24 | Scott Perry | 183.3 | OAK |
| +026+ | 2.12 | Pol Perritt | 111.3 | SFN |
| +028+ | 2.09 | Phil Douglas | 55.7 | CHN |
| +029+ | 2.08 | Slim Sallee | 114 | SFN |
| +034+ | 1.93 | Lefty Tyler | 142 | CHN |
| +037+ | 1.65 | Al Demaree | 91 | SFN |
| +040+ | 1.51 | Harry Harper | 132 | MIN |
| +041+ | 1.49 | Joe Oeschger | 113 | PHI |
| +043+ | 1.45 | Frank Shellenback | 100.3 | CHA |
| +047+ | 1.34 | Eddie Cicotte | 152.3 | CHA |
| XXXXX | 1.14 | Brad Hogg | 117.7 | PHI |
| XXXXX | 1.06 | Allen Sothoron | 121 | BAL |
| XXXXX | 1.06 | Jimmy Ring | 19.7 | CIN |
| XXXXX | 1.04 | Paul Carter | 36 | CHN |
| XXXXX | 1.03 | Byron Houck | 32.3 | BAL |
| XXXXX | 1.02 | Guy Morton | 132.7 | CLE |
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