| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 13.57 | 191806271_OAK_MIN |
| Hippo Vaughn | CHN | 5.83 | 191806290_CHN_CIN |
| Eddie Cicotte | CHA | 2.68 | 191806281_BAL_CHA |
| Bullet Joe Bush | BOS | 1.74 | 191806270_BOS_NYA |
| Dana Fillingim | ATL | 1.61 | 191806270_SFN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Davenport | BAL | -4.77 | 191806282_BAL_CHA |
| Bill James | DET | -3.72 | 191806290_DET_CLE |
| Jim Shaw | MIN | -2.81 | 191806272_OAK_MIN |
| Jack Coombs | LAN | -2.03 | 191806291_LAN_ATL |
| Happy Finneran | NYA | -1.41 | 191806280_NYA_OAK |
Based on accumulated WAA for this season up to 1918-06-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.14 | Walter Johnson | 166.3 | MIN |
| +002+ | 4.83 | Stan Coveleski | 173.3 | CLE |
| +003+ | 4.24 | Hippo Vaughn | 149 | CHN |
| +008+ | 2.81 | Dana Fillingim | 89 | ATL |
| +013+ | 2.64 | Bullet Joe Bush | 144.3 | BOS |
| +017+ | 2.39 | Frank Shellenback | 85 | CHA |
| +020+ | 2.25 | Carl Mays | 144.7 | BOS |
| +026+ | 1.92 | Al Demaree | 82 | SFN |
| +027+ | 1.91 | Burleigh Grimes | 117.7 | LAN |
| +030+ | 1.79 | Slim Sallee | 106 | SFN |
| +031+ | 1.76 | Phil Douglas | 40 | CHN |
| +032+ | 1.63 | Pol Perritt | 100.3 | SFN |
| +033+ | 1.61 | Rube Marquard | 126 | LAN |
| +036+ | 1.58 | Scott Perry | 172.3 | OAK |
| +037+ | 1.57 | Lefty Tyler | 121 | CHN |
| +044+ | 1.39 | Guy Morton | 125.3 | CLE |
| +046+ | 1.33 | Red Ames | 94.3 | SLN |
| XXXXX | 1.03 | Eddie Cicotte | 140.3 | CHA |
| XXXXX | 1.01 | Lee Meadows | 68.3 | SLN |
| XXXXX | 0.98 | Rube Bressler | 119.7 | CIN |
| XXXXX | 0.95 | Harry Harper | 123 | MIN |
| XXXXX | 0.89 | Leon Cadore | 17 | LAN |
| XXXXX | 0.88 | Allen Sothoron | 112 | BAL |
| XXXXX | 0.87 | Wilbur Cooper | 121 | PIT |
| XXXXX | 0.84 | Hooks Dauss | 116 | DET |
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