| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 16.02 | 191807042_NYA_MIN |
| Carl Mays | BOS | 3.98 | 191807042_BOS_OAK |
| Stan Coveleski | CLE | 2.93 | 191807041_BAL_CLE |
| Rube Marquard | LAN | 1.72 | 191807041_LAN_SFN |
| Wilbur Cooper | PIT | 1.43 | 191807042_CIN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill James | DET | -4.02 | 191807042_DET_CHA |
| Jim Shaw | MIN | -2.55 | 191807050_NYA_MIN |
| Jack Coombs | LAN | -2.05 | 191807042_LAN_SFN |
| Jakie May | SLN | -1.58 | 191807050_CHN_SLN |
| Ray Caldwell | NYA | -1.27 | 191807042_NYA_MIN |
Based on accumulated WAA for this season up to 1918-07-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.29 | Walter Johnson | 185.3 | MIN |
| +004+ | 3.98 | Stan Coveleski | 189.3 | CLE |
| +008+ | 2.92 | Carl Mays | 165.3 | BOS |
| +009+ | 2.88 | Dana Fillingim | 97 | ATL |
| +015+ | 2.52 | Burleigh Grimes | 126.7 | LAN |
| +016+ | 2.44 | Bullet Joe Bush | 154.7 | BOS |
| +020+ | 2.35 | Red Ames | 114.3 | SLN |
| +021+ | 2.25 | Rube Marquard | 142 | LAN |
| +022+ | 2.22 | Scott Perry | 183.3 | OAK |
| +026+ | 2.13 | Pol Perritt | 111.3 | SFN |
| +029+ | 2.09 | Phil Douglas | 55.7 | CHN |
| +033+ | 1.95 | Lefty Tyler | 142 | CHN |
| +037+ | 1.66 | Al Demaree | 91 | SFN |
| +041+ | 1.52 | Harry Harper | 132 | MIN |
| +042+ | 1.49 | Joe Oeschger | 113 | PHI |
| +044+ | 1.45 | Frank Shellenback | 100.3 | CHA |
| +048+ | 1.35 | Eddie Cicotte | 152.3 | CHA |
| XXXXX | 1.15 | Brad Hogg | 117.7 | PHI |
| XXXXX | 1.07 | Allen Sothoron | 121 | BAL |
| XXXXX | 1.06 | Jimmy Ring | 19.7 | CIN |
| XXXXX | 1.03 | Guy Morton | 132.7 | CLE |
| XXXXX | 1.02 | Dick Rudolph | 55 | ATL |
| XXXXX | 0.95 | Bob Geary | 73 | OAK |
| XXXXX | 0.94 | Paul Carter | 37.7 | CHN |
| XXXXX | 0.86 | George Mogridge | 123 | NYA |
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