| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Walkup | BAL | -1.92 | 193805200_BOS_BAL |
| Bud Thomas | OAK | -1.36 | 193805200_OAK_DET |
| Hugh Mulcahy | PHI | -1.1 | 193805190_CIN_PHI |
| Jimmie DeShong | MIN | -0.9 | 193805190_MIN_CLE |
| Earl Whitehill | CLE | -0.76 | 193805210_MIN_CLE |
Based on accumulated WAA for this season up to 1938-05-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.41 | Bob Feller | 59 | CLE |
| +003+ | 3.3 | Lefty Grove | 69 | BOS |
| +004+ | 3.13 | Paul Derringer | 65.3 | CIN |
| +005+ | 2.71 | Tot Pressnell | 54 | LAN |
| +008+ | 2.19 | Carl Hubbell | 44 | SFN |
| +009+ | 2.13 | Johnny Allen | 56.7 | CLE |
| +010+ | 2.05 | Jack Wilson | 35.3 | BOS |
| +012+ | 1.84 | Dizzy Dean | 25.7 | CHN |
| +018+ | 1.69 | Harry Gumbert | 49.7 | SFN |
| +019+ | 1.65 | Spud Chandler | 34 | NYA |
| +020+ | 1.57 | Milt Shoffner | 43.3 | ATL |
| +021+ | 1.49 | Cliff Melton | 67 | SFN |
| +022+ | 1.43 | Bob Klinger | 19.7 | PIT |
| +026+ | 1.35 | Dutch Leonard | 51.3 | MIN |
| +028+ | 1.32 | Red Ruffing | 41.3 | NYA |
| +027+ | 1.32 | Buck Ross | 34.7 | OAK |
| +031+ | 1.25 | Van Mungo | 43.7 | LAN |
| XXXXX | 1.18 | Ted Lyons | 25 | CHA |
| XXXXX | 1.12 | John Whitehead | 24.3 | CHA |
| XXXXX | 1.12 | Bill McGee | 32.3 | SLN |
| XXXXX | 1.09 | Boots Poffenberger | 27 | DET |
| XXXXX | 1 | Thornton Lee | 51 | CHA |
| XXXXX | 0.91 | Larry French | 57.3 | CHN |
| XXXXX | 0.9 | Vern Kennedy | 58 | DET |
| XXXXX | 0.88 | Joe Beggs | 24 | NYA |
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