| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Hubbell | SFN | 4.89 | 193807090_ATL_SFN |
| Red Ruffing | NYA | 2.92 | 193807041_NYA_MIN |
| Paul Derringer | CIN | 2.32 | 193807080_CIN_CHN |
| Lou Fette | ATL | 2.11 | 193807090_ATL_SFN |
| Van Mungo | LAN | 1.95 | 193807042_LAN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Chief Hogsett | MIN | -3.75 | 193807042_NYA_MIN |
| Jim Walkup | BAL | -3.75 | 193807041_BAL_CHA |
| Bucky Walters | CIN | -1.26 | 193807042_PIT_CIN |
| Bud Thomas | OAK | -0.95 | 193807042_OAK_BOS |
| Vern Kennedy | DET | -0.84 | 193807081_CHA_DET |
Based on accumulated WAA for this season up to 1938-07-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 5.66 | Johnny Vander Meer | 126.3 | CIN |
| +008+ | 4.39 | Bill Lee | 128 | CHN |
| +009+ | 4.18 | Cliff Melton | 133.3 | SFN |
| +011+ | 3.88 | Johnny Allen | 127 | CLE |
| +015+ | 3.72 | Carl Hubbell | 116 | SFN |
| +016+ | 3.69 | Paul Derringer | 147 | CIN |
| +017+ | 3.69 | Bob Klinger | 83.7 | PIT |
| +018+ | 3.66 | Lefty Grove | 136.7 | BOS |
| +020+ | 3.53 | Lou Fette | 115.7 | ATL |
| +022+ | 3.34 | Bill McGee | 108 | SLN |
| +023+ | 3.07 | Danny MacFayden | 87.3 | ATL |
| +026+ | 2.98 | Bob Feller | 132.7 | CLE |
| +027+ | 2.97 | Tot Pressnell | 113.3 | LAN |
| +029+ | 2.87 | Bill Swift | 81.7 | PIT |
| +032+ | 2.64 | Hal Schumacher | 115.7 | SFN |
| +033+ | 2.62 | Ted Lyons | 84.7 | CHA |
| +035+ | 2.45 | Larry French | 117 | CHN |
| +036+ | 2.4 | Red Ruffing | 115 | NYA |
| +041+ | 2.21 | Peaches Davis | 89 | CIN |
| +043+ | 2.13 | Jack Wilson | 86.7 | BOS |
| +044+ | 2.1 | Ira Hutchinson | 62.3 | ATL |
| +045+ | 2.1 | Freddie Fitzsimmons | 102.3 | LAN |
| +049+ | 1.96 | Clay Bryant | 116.3 | CHN |
| +051+ | 1.93 | Dizzy Dean | 25.7 | CHN |
| +057+ | 1.83 | Russ Bauers | 110 | PIT |
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