| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 15.8 | 191806300_BOS_MIN |
| Hippo Vaughn | CHN | 6.52 | 191807021_CHN_SLN |
| Stan Coveleski | CLE | 4.19 | 191806301_DET_CLE |
| Carl Mays | BOS | 3.23 | 191806300_BOS_MIN |
| Eddie Cicotte | CHA | 2.6 | 191807021_DET_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Davenport | BAL | -4.14 | 191807012_BAL_CHA |
| Bill James | DET | -3.23 | 191807021_DET_CHA |
| Ray Caldwell | NYA | -1.69 | 191807010_NYA_OAK |
| Jakie May | SLN | -1.48 | 191807010_CHN_SLN |
| Bob Steele | PIT | -1.09 | 191806301_PIT_SLN |
Based on accumulated WAA for this season up to 1918-07-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.12 | Walter Johnson | 176.3 | MIN |
| +002+ | 4.64 | Hippo Vaughn | 158 | CHN |
| +004+ | 3.84 | Stan Coveleski | 180.3 | CLE |
| +008+ | 2.91 | Dana Fillingim | 97 | ATL |
| +013+ | 2.74 | Bullet Joe Bush | 152.3 | BOS |
| +015+ | 2.68 | Carl Mays | 154.7 | BOS |
| +017+ | 2.51 | Burleigh Grimes | 126.7 | LAN |
| +024+ | 2.13 | Frank Shellenback | 94 | CHA |
| +026+ | 2.1 | Slim Sallee | 114 | SFN |
| +028+ | 1.92 | Al Demaree | 82 | SFN |
| +029+ | 1.88 | Red Ames | 103.3 | SLN |
| +030+ | 1.79 | Phil Douglas | 47.7 | CHN |
| +033+ | 1.66 | Rube Marquard | 133 | LAN |
| +034+ | 1.63 | Pol Perritt | 100.3 | SFN |
| +037+ | 1.57 | Scott Perry | 172.3 | OAK |
| +040+ | 1.5 | Harry Harper | 132 | MIN |
| +042+ | 1.41 | Guy Morton | 125.3 | CLE |
| +047+ | 1.3 | Lefty Tyler | 132 | CHN |
| XXXXX | 1.19 | Eddie Cicotte | 149.3 | CHA |
| XXXXX | 1.04 | Paul Carter | 36 | CHN |
| XXXXX | 1.04 | Hooks Dauss | 125 | DET |
| XXXXX | 0.98 | Wilbur Cooper | 133 | PIT |
| XXXXX | 0.92 | Byron Houck | 27.3 | BAL |
| XXXXX | 0.89 | Leon Cadore | 17 | LAN |
| XXXXX | 0.81 | Bunny Hearn | 126.3 | ATL |
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