| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Lee | CHN | 7.23 | 193806240_CHN_SFN |
| Lefty Grove | BOS | 7.05 | 193806220_BOS_DET |
| Johnny Allen | CLE | 4.64 | 193806222_NYA_CLE |
| Paul Derringer | CIN | 2.81 | 193806220_CIN_SFN |
| Hal Schumacher | SFN | 1.92 | 193806230_CIN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Walkup | BAL | -2.92 | 193806230_OAK_BAL |
| Wes Ferrell | MIN | -2.64 | 193806220_MIN_CHA |
| Mel Harder | CLE | -1.06 | 193806221_NYA_CLE |
| Vern Kennedy | DET | -0.77 | 193806220_BOS_DET |
| Bump Hadley | NYA | -0.19 | 193806230_NYA_CLE |
Based on accumulated WAA for this season up to 1938-06-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 5.29 | Bill Lee | 116 | CHN |
| +007+ | 4.62 | Johnny Vander Meer | 109.3 | CIN |
| +008+ | 4.36 | Lefty Grove | 120.7 | BOS |
| +009+ | 3.92 | Paul Derringer | 123.7 | CIN |
| +010+ | 3.7 | Tot Pressnell | 99.7 | LAN |
| +012+ | 3.6 | Bob Feller | 101 | CLE |
| +013+ | 3.52 | Johnny Allen | 108.7 | CLE |
| +015+ | 3.36 | Lynn Nelson | 99 | OAK |
| +016+ | 3.35 | Bill McGee | 88 | SLN |
| +017+ | 3.31 | Cliff Melton | 118.3 | SFN |
| +021+ | 3 | Danny MacFayden | 87.3 | ATL |
| +022+ | 2.96 | Jack Wilson | 82.3 | BOS |
| +023+ | 2.9 | Freddie Fitzsimmons | 89.7 | LAN |
| +024+ | 2.89 | Carl Hubbell | 95 | SFN |
| +027+ | 2.58 | Bob Klinger | 65.7 | PIT |
| +028+ | 2.45 | Monty Stratton | 57.7 | CHA |
| +032+ | 2.36 | Dutch Leonard | 100.3 | MIN |
| +036+ | 2.16 | Lou Fette | 91.7 | ATL |
| +042+ | 1.95 | Jim Weaver | 69 | TOT |
| +044+ | 1.93 | Dizzy Dean | 25.7 | CHN |
| +045+ | 1.9 | George Caster | 107.3 | OAK |
| +046+ | 1.88 | Ted Lyons | 66.7 | CHA |
| +049+ | 1.87 | Bill Swift | 67 | PIT |
| +050+ | 1.86 | Red Ruffing | 90.3 | NYA |
| +054+ | 1.71 | Peaches Davis | 75.3 | CIN |
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