| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Hubbell | SFN | 4.29 | 193807210_SFN_SLN |
| Johnny Vander Meer | CIN | 4.01 | 193807200_ATL_CIN |
| Lou Fette | ATL | 2.04 | 193807200_ATL_CIN |
| Larry French | CHN | 1.69 | 193807190_LAN_CHN |
| Bob Klinger | PIT | 0.99 | 193807201_PHI_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wes Ferrell | MIN | -4.04 | 193807200_DET_MIN |
| Bill Hallahan | PHI | -0.94 | 193807210_PHI_PIT |
| Vern Kennedy | DET | -0.69 | 193807190_DET_MIN |
| Clyde Shoun | SLN | -0.32 | 193807201_SFN_SLN |
| Whitey Moore | CIN | -0.18 | 193807191_ATL_CIN |
Based on accumulated WAA for this season up to 1938-07-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 6.95 | Johnny Vander Meer | 153.3 | CIN |
| +003+ | 6.08 | Bill Lee | 153 | CHN |
| +009+ | 4.97 | Carl Hubbell | 134.7 | SFN |
| +012+ | 4.38 | Lefty Grove | 149.7 | BOS |
| +015+ | 4.03 | Paul Derringer | 162 | CIN |
| +018+ | 3.59 | Bill McGee | 118 | SLN |
| +024+ | 3.4 | Johnny Allen | 134 | CLE |
| +025+ | 3.36 | Tot Pressnell | 131.3 | LAN |
| +027+ | 3.25 | Clay Bryant | 137.3 | CHN |
| +029+ | 3.15 | Lou Fette | 133.3 | ATL |
| +030+ | 3.13 | Ted Lyons | 101.7 | CHA |
| +032+ | 3.08 | Red Ruffing | 133 | NYA |
| +033+ | 3.06 | Danny MacFayden | 94.3 | ATL |
| +035+ | 2.97 | Cliff Melton | 154.7 | SFN |
| +036+ | 2.87 | Bob Klinger | 99.7 | PIT |
| +038+ | 2.78 | Charlie Root | 76 | CHN |
| +039+ | 2.63 | Dizzy Dean | 34.7 | CHN |
| +043+ | 2.57 | Freddie Fitzsimmons | 117 | LAN |
| +044+ | 2.53 | Bob Feller | 148.3 | CLE |
| +045+ | 2.44 | Jack Wilson | 91.7 | BOS |
| +046+ | 2.38 | Peaches Davis | 107 | CIN |
| +047+ | 2.33 | Bill Swift | 94 | PIT |
| +049+ | 2.25 | Cy Blanton | 82.3 | PIT |
| +050+ | 2.21 | Russ Bauers | 138.7 | PIT |
| +051+ | 2.17 | Bob Weiland | 136 | SLN |
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