| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | BOS | 8 | 193805240_BOS_DET |
| Johnny Allen | CLE | 5.22 | 193805240_NYA_CLE |
| Danny MacFayden | ATL | 3.57 | 193805250_CIN_ATL |
| Red Ruffing | NYA | 3.54 | 193805260_NYA_DET |
| Van Mungo | LAN | 3.15 | 193805240_CHN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Russ Van Atta | BAL | -3.08 | 193805240_OAK_BAL |
| Jimmie DeShong | MIN | -2.16 | 193805260_MIN_BAL |
| Bill Dietrich | CHA | -1.19 | 193805260_OAK_CHA |
| Bud Thomas | OAK | -0.94 | 193805250_OAK_CHA |
| Mel Harder | CLE | -0.72 | 193805250_BOS_CLE |
Based on accumulated WAA for this season up to 1938-05-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.72 | Paul Derringer | 75.7 | CIN |
| +003+ | 3.72 | Bob Feller | 62 | CLE |
| +004+ | 3.41 | Lefty Grove | 78 | BOS |
| +007+ | 2.66 | Carl Hubbell | 53 | SFN |
| +008+ | 2.51 | Jack Wilson | 52.3 | BOS |
| +009+ | 2.35 | Milt Shoffner | 54.3 | ATL |
| +013+ | 2.05 | Red Ruffing | 50.3 | NYA |
| +014+ | 2.04 | Tot Pressnell | 62 | LAN |
| +015+ | 1.97 | Johnny Allen | 65.7 | CLE |
| +017+ | 1.84 | Dizzy Dean | 25.7 | CHN |
| +018+ | 1.74 | Harry Gumbert | 58.7 | SFN |
| +021+ | 1.69 | Spud Chandler | 34 | NYA |
| +022+ | 1.65 | Ted Lyons | 34 | CHA |
| +024+ | 1.56 | Bill McGee | 40.7 | SLN |
| +025+ | 1.51 | Cliff Melton | 67 | SFN |
| +027+ | 1.5 | Lynn Nelson | 45 | OAK |
| +029+ | 1.46 | Bob Klinger | 19.7 | PIT |
| +031+ | 1.35 | Larry French | 66.3 | CHN |
| +033+ | 1.32 | Buck Ross | 34.7 | OAK |
| XXXXX | 1.18 | John Whitehead | 31.3 | CHA |
| XXXXX | 1.14 | Boots Poffenberger | 40 | DET |
| XXXXX | 1.08 | Van Mungo | 48.3 | LAN |
| XXXXX | 1 | Thornton Lee | 51 | CHA |
| XXXXX | 0.96 | Danny MacFayden | 53 | ATL |
| XXXXX | 0.93 | Lefty Mills | 19.7 | BAL |
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