| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lou Fette | ATL | 8.02 | 193905270_ATL_LAN |
| Lefty Grove | BOS | 4.59 | 193905271_MIN_BOS |
| Bill Lee | CHN | 3.53 | 193905260_PIT_CHN |
| Lefty Gomez | NYA | 2.95 | 193905271_OAK_NYA |
| Curt Davis | SLN | 2.38 | 193905281_CIN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jimmie DeShong | MIN | -2.93 | 193905271_MIN_BOS |
| Vern Kennedy | BAL | -2.7 | 193905270_BAL_DET |
| Oral Hildebrand | NYA | -1.68 | 193905260_OAK_NYA |
| Bobo Newsom | DET | -1.67 | 193905280_BAL_DET |
| Roy Parmelee | OAK | -1.11 | 193905271_OAK_NYA |
Based on accumulated WAA for this season up to 1939-05-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.32 | Curt Davis | 75 | SLN |
| +002+ | 3.6 | Lou Fette | 61 | ATL |
| +004+ | 3.27 | Red Ruffing | 59 | NYA |
| +005+ | 2.75 | Tommy Bridges | 60 | DET |
| +007+ | 2.56 | Willis Hudlin | 58.3 | CLE |
| +010+ | 2.49 | Lon Warneke | 56.7 | SLN |
| +012+ | 2.36 | Bob Feller | 71.3 | CLE |
| +014+ | 2.28 | Whitey Moore | 55 | CIN |
| +017+ | 2.17 | Whit Wyatt | 44.7 | LAN |
| +020+ | 1.91 | Bucky Walters | 68.3 | CIN |
| +023+ | 1.78 | Dizzy Dean | 23 | CHN |
| +025+ | 1.68 | Rip Sewell | 61 | PIT |
| +028+ | 1.52 | Ted Lyons | 35 | CHA |
| +031+ | 1.46 | Al Milnar | 45 | CLE |
| +033+ | 1.44 | Lee Grissom | 38 | CIN |
| +036+ | 1.39 | Archie McKain | 33.3 | DET |
| +037+ | 1.38 | Paul Derringer | 69.3 | CIN |
| +038+ | 1.36 | Oral Hildebrand | 31 | NYA |
| +039+ | 1.35 | George Caster | 56.3 | OAK |
| +040+ | 1.34 | Carl Hubbell | 21.3 | SFN |
| +042+ | 1.33 | Syl Johnson | 18.3 | PHI |
| +043+ | 1.32 | Woody Rich | 46.3 | BOS |
| +044+ | 1.32 | Alex Carrasquel | 38.7 | MIN |
| +046+ | 1.31 | Bob Weiland | 36.3 | SLN |
| +049+ | 1.28 | Lefty Gomez | 43 | NYA |
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