| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 15.04 | 191808252_CHA_MIN |
| Stan Coveleski | CLE | 4.47 | 191808230_CLE_MIN |
| Scott Perry | OAK | 3.41 | 191808242_CHA_OAK |
| Burleigh Grimes | LAN | 3.41 | 191808241_LAN_CHN |
| Lefty Tyler | CHN | 1.82 | 191808252_LAN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Happy Finneran | NYA | -2.69 | 191808241_DET_NYA |
| George Smith | LAN | -1.48 | 191808252_LAN_CHN |
| Mule Watson | OAK | -0.72 | 191808241_CHA_OAK |
| Hooks Dauss | DET | -0.6 | 191808242_DET_NYA |
| Doc Ayers | MIN | -0.46 | 191808230_CLE_MIN |
Based on accumulated WAA for this season up to 1918-08-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.58 | Walter Johnson | 316 | MIN |
| +002+ | 6.17 | Hippo Vaughn | 277.3 | CHN |
| +004+ | 5.75 | Stan Coveleski | 296.3 | CLE |
| +005+ | 5.68 | Scott Perry | 317.7 | OAK |
| +007+ | 4.82 | Burleigh Grimes | 254 | LAN |
| +010+ | 4 | Allen Sothoron | 209 | BAL |
| +013+ | 3.71 | Carl Mays | 266.3 | BOS |
| +016+ | 3.56 | Bullet Joe Bush | 257.7 | BOS |
| +017+ | 3.52 | Lefty Tyler | 255.3 | CHN |
| +020+ | 3.16 | Red Ames | 190 | SLN |
| +021+ | 3.07 | Wilbur Cooper | 255 | PIT |
| +022+ | 2.97 | Harry Harper | 235 | MIN |
| +030+ | 2.64 | George Mogridge | 218.3 | NYA |
| +035+ | 2.45 | Eddie Cicotte | 250 | CHA |
| +048+ | 2.02 | Babe Ruth | 158 | BOS |
| +050+ | 1.88 | Hod Eller | 202 | CIN |
| +055+ | 1.71 | Sad Sam Jones | 166 | BOS |
| +057+ | 1.68 | Phil Douglas | 146.3 | CHN |
| +058+ | 1.62 | Speed Martin | 35.7 | CHN |
| +061+ | 1.53 | Frank Miller | 155.3 | PIT |
| +066+ | 1.34 | Jake Northrop | 40 | ATL |
| +070+ | 1.28 | Eddie Matteson | 59 | MIN |
| XXXXX | 1.1 | Guy Morton | 210.7 | CLE |
| XXXXX | 1.1 | Al Demaree | 142 | SFN |
| XXXXX | 1.07 | Rube Bressler | 128.7 | CIN |
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