| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lou Fette | ATL | 9.01 | 193906240_ATL_SLN |
| Red Ruffing | NYA | 4.67 | 193906240_BAL_NYA |
| Dizzy Dean | CHN | 3.03 | 193906220_ATL_CHN |
| Bob Feller | CLE | 2.88 | 193906230_CLE_OAK |
| Russ Bauers | PIT | 2.4 | 193906230_LAN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Hugh Mulcahy | PHI | -4.37 | 193906240_PHI_CHN |
| John Whitehead | BAL | -3.56 | 193906220_BAL_BOS |
| Johnny Marcum | CHA | -2.2 | 193906240_CHA_BOS |
| Jim Bagby | BOS | -1.33 | 193906240_CHA_BOS |
| Lynn Nelson | OAK | -1.27 | 193906220_DET_OAK |
Based on accumulated WAA for this season up to 1939-06-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.99 | Lou Fette | 82 | ATL |
| +002+ | 4.93 | Tommy Bridges | 94.7 | DET |
| +003+ | 4.78 | Bucky Walters | 113.7 | CIN |
| +005+ | 4.21 | Bob Feller | 122 | CLE |
| +009+ | 3.79 | Whit Wyatt | 64.7 | LAN |
| +010+ | 3.61 | Red Ruffing | 96.3 | NYA |
| +013+ | 3.06 | Curt Davis | 106.7 | SLN |
| +015+ | 2.98 | Dizzy Dean | 43.3 | CHN |
| +020+ | 2.78 | Atley Donald | 69.3 | NYA |
| +021+ | 2.77 | Whitey Moore | 91.3 | CIN |
| +022+ | 2.74 | Lon Warneke | 89 | SLN |
| +028+ | 2.53 | Hugh Casey | 51.3 | LAN |
| +029+ | 2.49 | Bob Weiland | 68 | SLN |
| +030+ | 2.42 | Willis Hudlin | 95.7 | CLE |
| +033+ | 2.2 | Bill Lohrman | 60.3 | SFN |
| +036+ | 2.14 | Lefty Grove | 78 | BOS |
| +038+ | 2.1 | Lefty Gomez | 73 | NYA |
| +043+ | 1.92 | Bump Hadley | 58.7 | NYA |
| +045+ | 1.77 | Bill McGee | 54.7 | SLN |
| +048+ | 1.66 | Paul Derringer | 107.7 | CIN |
| +049+ | 1.58 | Bob Klinger | 101.3 | PIT |
| +051+ | 1.55 | Syl Johnson | 37 | PHI |
| +053+ | 1.5 | Bobo Newsom | 114.3 | TOT |
| +056+ | 1.49 | Russ Bauers | 22.7 | PIT |
| +059+ | 1.44 | Vern Kennedy | 94.7 | TOT |
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