| 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 1939-06-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.62 | Lou Fette | 61 | ATL |
| +003+ | 3.41 | Whitey Moore | 72.3 | CIN |
| +004+ | 3.4 | Bob Feller | 89.3 | CLE |
| +005+ | 3.38 | Willis Hudlin | 74.3 | CLE |
| +007+ | 3.14 | Curt Davis | 78 | SLN |
| +008+ | 2.96 | Tommy Bridges | 60.7 | DET |
| +009+ | 2.91 | Lon Warneke | 71.7 | SLN |
| +014+ | 2.44 | Bucky Walters | 77.3 | CIN |
| +016+ | 2.33 | Rip Sewell | 70 | PIT |
| +018+ | 2.27 | Whit Wyatt | 44.7 | LAN |
| +019+ | 2.25 | Bump Hadley | 45.3 | NYA |
| +020+ | 2.24 | Paul Derringer | 81.7 | CIN |
| +024+ | 2.14 | Bill McGee | 35.3 | SLN |
| +026+ | 2.11 | Lefty Grove | 61.3 | BOS |
| +031+ | 1.93 | Red Ruffing | 69.3 | NYA |
| +034+ | 1.84 | Lee Grissom | 52.3 | CIN |
| +036+ | 1.81 | Dizzy Dean | 23 | CHN |
| +042+ | 1.66 | Lefty Gomez | 52 | NYA |
| +041+ | 1.66 | Larry French | 56 | CHN |
| +044+ | 1.62 | Syl Johnson | 27.3 | PHI |
| +045+ | 1.61 | Oral Hildebrand | 32.7 | NYA |
| +046+ | 1.51 | Van Mungo | 50 | LAN |
| +047+ | 1.5 | Hugh Casey | 27.3 | LAN |
| +052+ | 1.45 | Atley Donald | 43.7 | NYA |
| XXXXX | 1.09 | Ted Lyons | 53 | CHA |
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