| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 11.5 | 191806170_MIN_CHA |
| Hippo Vaughn | CHN | 4.36 | 191806180_CHN_LAN |
| Stan Coveleski | CLE | 4.3 | 191806170_OAK_CLE |
| Eddie Cicotte | CHA | 3.66 | 191806160_MIN_CHA |
| Carl Mays | BOS | 1.96 | 191806170_BOS_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Caldwell | NYA | -1.75 | 191806160_NYA_DET |
| Bernie Boland | DET | -1.63 | 191806182_DET_BAL |
| Erskine Mayer | PHI | -0.64 | 191806170_PIT_PHI |
| Bert Gallia | BAL | -0.54 | 191806170_BOS_BAL |
| Doc Ayers | MIN | -0.48 | 191806180_MIN_CLE |
Based on accumulated WAA for this season up to 1918-06-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.79 | Walter Johnson | 144.3 | MIN |
| +002+ | 5.17 | Stan Coveleski | 152.3 | CLE |
| +003+ | 4.04 | Dana Fillingim | 72 | ATL |
| +006+ | 2.73 | Red Faber | 80.7 | CHA |
| +007+ | 2.7 | Hippo Vaughn | 122 | CHN |
| +009+ | 2.6 | Bullet Joe Bush | 118 | BOS |
| +015+ | 2.28 | Frank Shellenback | 63.3 | CHA |
| +020+ | 1.9 | Eddie Cicotte | 114.3 | CHA |
| +027+ | 1.71 | Urban Shocker | 82 | BAL |
| +030+ | 1.54 | Carl Mays | 127.7 | BOS |
| +031+ | 1.51 | Pol Perritt | 78.3 | SFN |
| +032+ | 1.48 | Guy Morton | 103.7 | CLE |
| +035+ | 1.37 | Scott Perry | 137.7 | OAK |
| +036+ | 1.37 | Brad Hogg | 98 | PHI |
| +039+ | 1.3 | Lefty Tyler | 107 | CHN |
| XXXXX | 1.18 | Hank Thormahlen | 88.3 | NYA |
| XXXXX | 1.1 | Bunny Hearn | 114 | ATL |
| XXXXX | 1.01 | Rube Bressler | 119.7 | CIN |
| XXXXX | 0.98 | Art Nehf | 128.3 | ATL |
| XXXXX | 0.96 | Phil Douglas | 18 | CHN |
| XXXXX | 0.89 | Frank Miller | 88.7 | PIT |
| XXXXX | 0.89 | Leon Cadore | 17 | LAN |
| XXXXX | 0.89 | Bob Harmon | 62.7 | PIT |
| XXXXX | 0.85 | Burleigh Grimes | 90.7 | LAN |
| XXXXX | 0.84 | Rube Marquard | 110 | LAN |
_