| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | BOS | 7.05 | 193806220_BOS_DET |
| Bill Lee | CHN | 5.84 | 193806200_CHN_LAN |
| Carl Hubbell | SFN | 4.92 | 193806210_CIN_SFN |
| Johnny Allen | CLE | 4.64 | 193806222_NYA_CLE |
| Red Ruffing | NYA | 3.9 | 193806210_NYA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wes Ferrell | MIN | -2.64 | 193806220_MIN_CHA |
| Mel Harder | CLE | -1.06 | 193806221_NYA_CLE |
| Vern Kennedy | DET | -0.77 | 193806220_BOS_DET |
| Oral Hildebrand | BAL | -0.71 | 193806210_OAK_BAL |
| Charlie Wagner | BOS | -0.71 | 193806212_BOS_DET |
Based on accumulated WAA for this season up to 1938-06-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.8 | Bill Lee | 115.3 | CHN |
| +004+ | 4.88 | Johnny Vander Meer | 101.7 | CIN |
| +008+ | 4.29 | Lefty Grove | 120.7 | BOS |
| +009+ | 3.87 | Paul Derringer | 123.7 | CIN |
| +010+ | 3.56 | Bob Feller | 101 | CLE |
| +011+ | 3.49 | Johnny Allen | 108.7 | CLE |
| +015+ | 3.3 | Bill McGee | 88 | SLN |
| +017+ | 2.98 | Tot Pressnell | 90.7 | LAN |
| +018+ | 2.97 | Danny MacFayden | 87.3 | ATL |
| +019+ | 2.95 | Cliff Melton | 113 | SFN |
| +020+ | 2.91 | Jack Wilson | 82.3 | BOS |
| +021+ | 2.86 | Carl Hubbell | 95 | SFN |
| +023+ | 2.63 | Lynn Nelson | 90 | OAK |
| +024+ | 2.54 | Bob Klinger | 65.7 | PIT |
| +025+ | 2.5 | Freddie Fitzsimmons | 81.7 | LAN |
| +027+ | 2.43 | Monty Stratton | 57.7 | CHA |
| +028+ | 2.43 | Bill Swift | 62.3 | PIT |
| +035+ | 2.13 | Lou Fette | 91.7 | ATL |
| +038+ | 1.95 | Hal Schumacher | 94.3 | SFN |
| +039+ | 1.93 | Jim Weaver | 69 | TOT |
| +040+ | 1.92 | Dizzy Dean | 25.7 | CHN |
| +042+ | 1.87 | George Caster | 107.3 | OAK |
| +043+ | 1.86 | Ted Lyons | 66.7 | CHA |
| +044+ | 1.85 | John Whitehead | 68.7 | CHA |
| +047+ | 1.82 | Red Ruffing | 90.3 | NYA |
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