| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 13.92 | 191808131_MIN_OAK |
| Hippo Vaughn | CHN | 7.15 | 191808140_PIT_CHN |
| Stan Coveleski | CLE | 5.11 | 191808150_CLE_NYA |
| Carl Mays | BOS | 2.41 | 191808150_CHA_BOS |
| Burleigh Grimes | LAN | 1.92 | 191808140_PHI_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Davenport | BAL | -4.08 | 191808140_BAL_OAK |
| George Smith | LAN | -2.33 | 191808150_LAN_PIT |
| Ray Caldwell | NYA | -1.16 | 191808150_CLE_NYA |
| Bill Sherdel | SLN | -0.93 | 191808130_CIN_SLN |
| George Cunningham | DET | -0.68 | 191808150_DET_MIN |
Based on accumulated WAA for this season up to 1918-08-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.35 | Walter Johnson | 286 | MIN |
| +002+ | 6.52 | Hippo Vaughn | 258.3 | CHN |
| +003+ | 5.78 | Stan Coveleski | 280.3 | CLE |
| +007+ | 4.53 | Burleigh Grimes | 231 | LAN |
| +008+ | 4.19 | Scott Perry | 285.7 | OAK |
| +010+ | 3.82 | Harry Harper | 212.3 | MIN |
| +012+ | 3.46 | Allen Sothoron | 193 | BAL |
| +013+ | 3.43 | Carl Mays | 257.3 | BOS |
| +023+ | 2.81 | Wilbur Cooper | 237 | PIT |
| +026+ | 2.73 | Lefty Tyler | 228.3 | CHN |
| +028+ | 2.68 | Red Ames | 182 | SLN |
| +027+ | 2.68 | Bullet Joe Bush | 239.7 | BOS |
| +029+ | 2.67 | Eddie Cicotte | 234 | CHA |
| +040+ | 2.12 | Hod Eller | 172 | CIN |
| +041+ | 2.11 | Babe Ruth | 133 | BOS |
| +047+ | 1.88 | Dick Rudolph | 125.7 | ATL |
| +054+ | 1.64 | Red Causey | 127.3 | SFN |
| +055+ | 1.63 | Eddie Matteson | 47 | MIN |
| +061+ | 1.42 | Sad Sam Jones | 148 | BOS |
| +066+ | 1.36 | Brad Hogg | 191 | PHI |
| +068+ | 1.33 | Jim Bagby | 247 | CLE |
| +073+ | 1.27 | Phil Douglas | 129.3 | CHN |
| +074+ | 1.26 | George Mogridge | 192.3 | NYA |
| XXXXX | 1.18 | Bernie Boland | 176 | DET |
| XXXXX | 1.15 | Rube Bressler | 128.7 | CIN |
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