| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 13.59 | 191808190_BAL_MIN |
| Hippo Vaughn | CHN | 7.71 | 191808181_ATL_CHN |
| Stan Coveleski | CLE | 4.72 | 191808190_CLE_BOS |
| Burleigh Grimes | LAN | 2.24 | 191808171_LAN_PIT |
| Scott Perry | OAK | 2.16 | 191808172_DET_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Coombs | LAN | -3.61 | 191808181_LAN_CIN |
| Lee Meadows | SLN | -2.98 | 191808182_PHI_SLN |
| Pete Schneider | CIN | -2.21 | 191808190_LAN_CIN |
| Milt Watson | PHI | -1.23 | 191808182_PHI_SLN |
| Slim Love | NYA | -1.17 | 191808172_CHA_NYA |
Based on accumulated WAA for this season up to 1918-08-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.17 | Walter Johnson | 307 | MIN |
| +002+ | 6.38 | Hippo Vaughn | 267.3 | CHN |
| +004+ | 5.61 | Stan Coveleski | 285.3 | CLE |
| +006+ | 5.09 | Burleigh Grimes | 240 | LAN |
| +007+ | 4.76 | Scott Perry | 296.7 | OAK |
| +010+ | 3.93 | Allen Sothoron | 202 | BAL |
| +014+ | 3.33 | Carl Mays | 257.3 | BOS |
| +016+ | 3.23 | Lefty Tyler | 237.3 | CHN |
| +018+ | 3.17 | Bullet Joe Bush | 248.7 | BOS |
| +020+ | 3.14 | Red Ames | 190 | SLN |
| +023+ | 2.9 | Harry Harper | 221 | MIN |
| +025+ | 2.89 | Wilbur Cooper | 246 | PIT |
| +029+ | 2.71 | Eddie Cicotte | 242 | CHA |
| +032+ | 2.53 | Hod Eller | 183 | CIN |
| +034+ | 2.44 | Babe Ruth | 142 | BOS |
| +047+ | 1.96 | Sad Sam Jones | 157 | BOS |
| +051+ | 1.71 | George Mogridge | 200.3 | NYA |
| +055+ | 1.66 | Eddie Matteson | 55 | MIN |
| +058+ | 1.6 | Phil Douglas | 138.3 | CHN |
| +065+ | 1.36 | Oscar Tuero | 31.7 | SLN |
| XXXXX | 1.2 | Speed Martin | 25.7 | CHN |
| XXXXX | 1.17 | Brad Hogg | 198 | PHI |
| XXXXX | 1.16 | Guy Morton | 205.7 | CLE |
| XXXXX | 1.15 | Frank Miller | 146.3 | PIT |
| XXXXX | 1.08 | Al Demaree | 142 | SFN |
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