| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 12 | 191808101_MIN_OAK |
| Hippo Vaughn | CHN | 6.85 | 191808080_CHN_LAN |
| Stan Coveleski | CLE | 6.1 | 191808080_MIN_CLE |
| Carl Mays | BOS | 2.88 | 191808102_NYA_BOS |
| Red Ames | SLN | 1.56 | 191808100_SLN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Coombs | LAN | -4.48 | 191808102_PHI_LAN |
| Tom Rogers | BAL | -1.55 | 191808100_DET_BAL |
| Pete Schneider | CIN | -1.54 | 191808090_CIN_PIT |
| Ray Caldwell | NYA | -1.3 | 191808102_NYA_BOS |
| Joe Oeschger | PHI | -0.92 | 191808101_PHI_LAN |
Based on accumulated WAA for this season up to 1918-08-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.37 | Walter Johnson | 277 | MIN |
| +002+ | 6.09 | Stan Coveleski | 268.3 | CLE |
| +003+ | 5.89 | Hippo Vaughn | 241.3 | CHN |
| +007+ | 4.45 | Burleigh Grimes | 222 | LAN |
| +008+ | 3.99 | Scott Perry | 275.7 | OAK |
| +010+ | 3.59 | Harry Harper | 203.3 | MIN |
| +011+ | 3.53 | Allen Sothoron | 193 | BAL |
| +016+ | 3.33 | Carl Mays | 248.3 | BOS |
| +017+ | 3.1 | Red Ames | 175 | SLN |
| +023+ | 2.75 | Bullet Joe Bush | 239.7 | BOS |
| +029+ | 2.52 | Eddie Cicotte | 225 | CHA |
| +031+ | 2.39 | Lefty Tyler | 219.3 | CHN |
| +033+ | 2.37 | Wilbur Cooper | 227 | PIT |
| +037+ | 2.25 | Rube Marquard | 204.3 | LAN |
| +040+ | 2.14 | Red Causey | 118.7 | SFN |
| +045+ | 2.02 | Phil Douglas | 117.7 | CHN |
| +046+ | 1.97 | Babe Ruth | 124 | BOS |
| +047+ | 1.89 | Dick Rudolph | 125.7 | ATL |
| +055+ | 1.6 | Eddie Matteson | 36 | MIN |
| +062+ | 1.45 | Frank Shellenback | 156.3 | CHA |
| +067+ | 1.4 | Al Demaree | 139.3 | SFN |
| +071+ | 1.32 | Paul Carter | 67 | CHN |
| +074+ | 1.29 | Sad Sam Jones | 139 | BOS |
| +072+ | 1.29 | George Mogridge | 192.3 | NYA |
| +075+ | 1.28 | Brad Hogg | 182.3 | PHI |
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