| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 13.59 | 191808190_BAL_MIN |
| Stan Coveleski | CLE | 4.72 | 191808190_CLE_BOS |
| Burleigh Grimes | LAN | 2.77 | 191808200_LAN_CIN |
| Scott Perry | OAK | 2.66 | 191808210_CHA_OAK |
| Carl Mays | BOS | 2.01 | 191808210_BAL_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pete Schneider | CIN | -2.21 | 191808190_LAN_CIN |
| Gene Packard | SLN | -2.04 | 191808200_PHI_SLN |
| Ray Caldwell | NYA | -1 | 191808190_CHA_NYA |
| Tom Rogers | BAL | -1 | 191808190_BAL_MIN |
| Deacon Jones | DET | -0.56 | 191808190_DET_OAK |
Based on accumulated WAA for this season up to 1918-08-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.2 | Walter Johnson | 307 | MIN |
| +002+ | 6.38 | Hippo Vaughn | 267.3 | CHN |
| +004+ | 5.69 | Stan Coveleski | 289.3 | CLE |
| +005+ | 5.5 | Burleigh Grimes | 249 | LAN |
| +007+ | 5.16 | Scott Perry | 305.7 | OAK |
| +010+ | 3.98 | Allen Sothoron | 209 | BAL |
| +012+ | 3.72 | Carl Mays | 266.3 | BOS |
| +016+ | 3.37 | Lefty Tyler | 246.3 | CHN |
| +018+ | 3.19 | Bullet Joe Bush | 248.7 | BOS |
| +020+ | 3.16 | Red Ames | 190 | SLN |
| +022+ | 2.91 | Wilbur Cooper | 246 | PIT |
| +028+ | 2.77 | Hod Eller | 193 | CIN |
| +033+ | 2.42 | Eddie Cicotte | 250 | CHA |
| +036+ | 2.39 | Harry Harper | 226 | MIN |
| +046+ | 2.07 | George Mogridge | 209.3 | NYA |
| +048+ | 1.97 | Sad Sam Jones | 157 | BOS |
| +054+ | 1.78 | Eddie Matteson | 57 | MIN |
| +058+ | 1.59 | Phil Douglas | 138.3 | CHN |
| +060+ | 1.53 | Frank Miller | 155.3 | PIT |
| +064+ | 1.44 | Babe Ruth | 149 | BOS |
| XXXXX | 1.2 | Speed Martin | 25.7 | CHN |
| XXXXX | 1.1 | Al Demaree | 142 | SFN |
| XXXXX | 1.09 | Bernie Boland | 186 | DET |
| XXXXX | 1.08 | Guy Morton | 210.7 | CLE |
| XXXXX | 1.08 | Rube Bressler | 128.7 | CIN |
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