| Starter | Tm | Tier | Game |
|---|---|---|---|
| Hippo Vaughn | CHN | 6.52 | 191807021_CHN_SLN |
| Eddie Cicotte | CHA | 2.6 | 191807021_DET_CHA |
| Bullet Joe Bush | BOS | 1.83 | 191807020_BOS_MIN |
| Rube Marquard | LAN | 1.61 | 191807010_LAN_ATL |
| Slim Sallee | SFN | 1.48 | 191807020_PHI_SFN |
| 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 |
| Elmer Jacobs | PHI | -1.06 | 191807020_PHI_SFN |
Based on accumulated WAA for this season up to 1918-07-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.15 | Walter Johnson | 176.3 | MIN |
| +002+ | 4.67 | Hippo Vaughn | 158 | CHN |
| +004+ | 3.86 | Stan Coveleski | 180.3 | CLE |
| +008+ | 2.92 | Dana Fillingim | 97 | ATL |
| +010+ | 2.78 | Bullet Joe Bush | 152.3 | BOS |
| +013+ | 2.72 | Carl Mays | 154.7 | BOS |
| +017+ | 2.55 | Burleigh Grimes | 126.7 | LAN |
| +021+ | 2.23 | Pol Perritt | 109.3 | SFN |
| +022+ | 2.11 | Slim Sallee | 114 | SFN |
| +024+ | 2.1 | Phil Douglas | 55.7 | CHN |
| +029+ | 1.96 | Red Ames | 104.3 | SLN |
| +031+ | 1.7 | Rube Marquard | 133 | LAN |
| +034+ | 1.67 | Al Demaree | 91 | SFN |
| +035+ | 1.59 | Scott Perry | 172.3 | OAK |
| +038+ | 1.52 | Harry Harper | 132 | MIN |
| +041+ | 1.49 | Frank Shellenback | 100.3 | CHA |
| +046+ | 1.33 | Lefty Tyler | 132 | CHN |
| XXXXX | 1.21 | Eddie Cicotte | 149.3 | CHA |
| XXXXX | 1.19 | Brad Hogg | 117.7 | PHI |
| XXXXX | 1.07 | Allen Sothoron | 121 | BAL |
| XXXXX | 1.06 | Wilbur Cooper | 134 | PIT |
| XXXXX | 1.05 | Paul Carter | 36 | CHN |
| XXXXX | 1.05 | Guy Morton | 132.7 | CLE |
| XXXXX | 1.04 | Dick Rudolph | 55 | ATL |
| XXXXX | 0.92 | Byron Houck | 27.3 | BAL |
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