| Starter | Tm | Tier | Game |
|---|---|---|---|
| Stan Coveleski | CLE | 5.11 | 191808150_CLE_NYA |
| Carl Mays | BOS | 2.41 | 191808150_CHA_BOS |
| Burleigh Grimes | LAN | 2.24 | 191808171_LAN_PIT |
| Scott Perry | OAK | 2.16 | 191808172_DET_OAK |
| Eddie Cicotte | CHA | 1.98 | 191808160_CHA_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Davenport | BAL | -3.35 | 191808160_BAL_OAK |
| Gene Packard | SLN | -2.82 | 191808160_ATL_SLN |
| George Smith | LAN | -2.33 | 191808150_LAN_PIT |
| Happy Finneran | NYA | -2.23 | 191808160_CLE_NYA |
| Pete Schneider | CIN | -1.79 | 191808160_SFN_CIN |
Based on accumulated WAA for this season up to 1918-08-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.63 | Walter Johnson | 293 | MIN |
| +002+ | 6.47 | Hippo Vaughn | 258.3 | CHN |
| +003+ | 5.74 | Stan Coveleski | 280.3 | CLE |
| +006+ | 5.08 | Burleigh Grimes | 240 | LAN |
| +007+ | 4.8 | Scott Perry | 296.7 | OAK |
| +010+ | 4 | Allen Sothoron | 202 | BAL |
| +014+ | 3.37 | Carl Mays | 257.3 | BOS |
| +016+ | 3.25 | Lefty Tyler | 237.3 | CHN |
| +017+ | 3.21 | Bullet Joe Bush | 248.7 | BOS |
| +019+ | 2.98 | Harry Harper | 221 | MIN |
| +027+ | 2.77 | Wilbur Cooper | 237 | PIT |
| +028+ | 2.75 | Eddie Cicotte | 242 | CHA |
| +029+ | 2.65 | Red Ames | 182 | SLN |
| +032+ | 2.46 | Babe Ruth | 142 | BOS |
| +040+ | 2.18 | Hod Eller | 174 | CIN |
| +054+ | 1.73 | George Mogridge | 200.3 | NYA |
| +056+ | 1.67 | Eddie Matteson | 55 | MIN |
| +058+ | 1.6 | Red Causey | 127.3 | SFN |
| +065+ | 1.39 | Sad Sam Jones | 148 | BOS |
| +067+ | 1.35 | Brad Hogg | 191 | PHI |
| +070+ | 1.3 | Oscar Tuero | 30.7 | SLN |
| +073+ | 1.25 | Phil Douglas | 129.3 | CHN |
| XXXXX | 1.17 | Guy Morton | 205.7 | CLE |
| XXXXX | 1.17 | Frank Miller | 146.3 | PIT |
| XXXXX | 1.1 | Rube Bressler | 128.7 | CIN |
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