| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | BOS | 5.47 | 193807010_BOS_OAK |
| Carl Hubbell | SFN | 4.56 | 193807020_SFN_LAN |
| Bob Feller | CLE | 2.66 | 193806300_DET_CLE |
| Red Ruffing | NYA | 2.57 | 193806300_OAK_NYA |
| Paul Derringer | CIN | 2.36 | 193807010_CHN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jimmie DeShong | MIN | -2.87 | 193806300_MIN_BOS |
| Wayne LaMaster | PHI | -2.73 | 193807012_PHI_ATL |
| Bobo Newsom | BAL | -1.28 | 193806300_CHA_BAL |
| Bucky Walters | CIN | -1.22 | 193806300_CIN_PIT |
| Charlie Wagner | BOS | -1.04 | 193807020_BOS_OAK |
Based on accumulated WAA for this season up to 1938-07-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 5.18 | Johnny Vander Meer | 118.3 | CIN |
| +008+ | 4.33 | Carl Hubbell | 113 | SFN |
| +010+ | 4.11 | Bill Lee | 120 | CHN |
| +011+ | 3.87 | Cliff Melton | 127.3 | SFN |
| +012+ | 3.78 | Lefty Grove | 136.7 | BOS |
| +013+ | 3.67 | Paul Derringer | 137 | CIN |
| +015+ | 3.38 | Bob Feller | 117 | CLE |
| +017+ | 3.3 | Bob Klinger | 74.7 | PIT |
| +018+ | 3.27 | Johnny Allen | 118 | CLE |
| +020+ | 3.16 | Bill McGee | 99 | SLN |
| +021+ | 3.1 | Danny MacFayden | 87.3 | ATL |
| +022+ | 3.06 | Tot Pressnell | 106.3 | LAN |
| +023+ | 3.01 | Jack Wilson | 82.3 | BOS |
| +027+ | 2.89 | Red Ruffing | 108.3 | NYA |
| +031+ | 2.74 | Clay Bryant | 104.3 | CHN |
| +033+ | 2.48 | Bill Swift | 72.7 | PIT |
| +034+ | 2.4 | Freddie Fitzsimmons | 97.7 | LAN |
| +035+ | 2.34 | Monty Stratton | 66.7 | CHA |
| +036+ | 2.29 | Ira Hutchinson | 57.7 | ATL |
| +039+ | 2.2 | Ted Lyons | 75.7 | CHA |
| +042+ | 2.12 | Larry French | 108.7 | CHN |
| +043+ | 2.12 | Lynn Nelson | 104.3 | OAK |
| +046+ | 1.98 | Jim Turner | 106 | ATL |
| +047+ | 1.96 | Dizzy Dean | 25.7 | CHN |
| +049+ | 1.91 | Jim Bagby | 75.7 | BOS |
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