| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 9.9 | 191805292_MIN_BOS |
| Hippo Vaughn | CHN | 6.04 | 191805302_CIN_CHN |
| Red Faber | CHA | 4.72 | 191805302_CHA_CLE |
| Fred Toney | CIN | 3.99 | 191805301_CIN_CHN |
| Stan Coveleski | CLE | 2.81 | 191805302_CHA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Elmer Myers | OAK | -5.72 | 191805292_OAK_NYA |
| Jim Shaw | MIN | -3.78 | 191805301_MIN_BOS |
| Bill James | DET | -2.81 | 191805290_DET_CLE |
| Ray Caldwell | NYA | -2.08 | 191805300_OAK_NYA |
| Bill Doak | SLN | -2.04 | 191805302_SLN_PIT |
Based on accumulated WAA for this season up to 1918-05-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.98 | Stan Coveleski | 107.3 | CLE |
| +002+ | 3.47 | Walter Johnson | 99.7 | MIN |
| +003+ | 3 | Hippo Vaughn | 87 | CHN |
| +004+ | 2.85 | Scott Perry | 103.3 | OAK |
| +005+ | 2.54 | Dana Fillingim | 44 | ATL |
| +010+ | 2.07 | Bullet Joe Bush | 79.3 | BOS |
| +011+ | 2.04 | Red Faber | 62.7 | CHA |
| +013+ | 1.88 | Hank Thormahlen | 64 | NYA |
| +016+ | 1.64 | Bill Sherdel | 59.7 | SLN |
| +019+ | 1.6 | Red Ames | 52.3 | SLN |
| +025+ | 1.32 | Jesse Barnes | 54.7 | SFN |
| +027+ | 1.29 | Hod Eller | 67 | CIN |
| XXXXX | 1.22 | Eric Erickson | 76.3 | DET |
| XXXXX | 1.19 | Fred Toney | 56 | CIN |
| XXXXX | 1.18 | Bunny Hearn | 83 | ATL |
| XXXXX | 1.13 | Jeff Tesreau | 61.3 | SFN |
| XXXXX | 1.13 | Slim Love | 82.3 | NYA |
| XXXXX | 1.12 | Erskine Mayer | 75.7 | PHI |
| XXXXX | 1 | Grover Lowdermilk | 46 | BAL |
| XXXXX | 0.89 | Wilbur Cooper | 58.3 | PIT |
| XXXXX | 0.8 | Urban Shocker | 40 | BAL |
| XXXXX | 0.78 | Lefty Tyler | 75.7 | CHN |
| XXXXX | 0.75 | Lefty Williams | 85.7 | CHA |
| XXXXX | 0.72 | Frank Miller | 59 | PIT |
| XXXXX | 0.57 | Brad Hogg | 60.7 | PHI |
_