| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | 4.54 | 193906040_NYA_DET |
| Lefty Grove | BOS | 4.42 | 193906042_BOS_CLE |
| Carl Hubbell | SFN | 3.64 | 193906040_CIN_SFN |
| Bill Lee | CHN | 2.67 | 193906040_CHN_PHI |
| Bob Feller | CLE | 2.26 | 193906041_BOS_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roxie Lawson | BAL | -4.93 | 193906032_OAK_BAL |
| Jimmie DeShong | MIN | -4.01 | 193906042_MIN_BAL |
| Hugh Mulcahy | PHI | -3.52 | 193906040_CHN_PHI |
| Earl Whitehill | CHN | -2.13 | 193906030_CHN_LAN |
| Buck Ross | OAK | -1.38 | 193906032_OAK_BAL |
Based on accumulated WAA for this season up to 1939-06-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.9 | Tommy Bridges | 69.7 | DET |
| +003+ | 3.65 | Lou Fette | 61 | ATL |
| +004+ | 3.45 | Whitey Moore | 72.3 | CIN |
| +005+ | 3.44 | Bob Feller | 89.3 | CLE |
| +006+ | 3.42 | Willis Hudlin | 74.3 | CLE |
| +007+ | 3.19 | Curt Davis | 78 | SLN |
| +009+ | 2.96 | Lon Warneke | 71.7 | SLN |
| +010+ | 2.96 | Bucky Walters | 86.3 | CIN |
| +015+ | 2.3 | Whit Wyatt | 44.7 | LAN |
| +016+ | 2.28 | Bump Hadley | 45.3 | NYA |
| +019+ | 2.28 | Paul Derringer | 81.7 | CIN |
| +024+ | 2.16 | Lefty Grove | 61.3 | BOS |
| +023+ | 2.16 | Bill McGee | 35.3 | SLN |
| +030+ | 1.98 | Red Ruffing | 69.3 | NYA |
| +032+ | 1.93 | Dizzy Dean | 24 | CHN |
| +034+ | 1.87 | Lee Grissom | 52.3 | CIN |
| +037+ | 1.7 | Lefty Gomez | 52 | NYA |
| +038+ | 1.68 | Rip Sewell | 73.3 | PIT |
| +041+ | 1.63 | Oral Hildebrand | 32.7 | NYA |
| +040+ | 1.63 | Syl Johnson | 27.3 | PHI |
| +043+ | 1.54 | Van Mungo | 50 | LAN |
| +045+ | 1.51 | Hugh Casey | 27.3 | LAN |
| +049+ | 1.48 | Atley Donald | 43.7 | NYA |
| +054+ | 1.39 | Vito Tamulis | 57.3 | LAN |
| XXXXX | 1.11 | Ted Lyons | 53 | CHA |
_