| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lou Fette | ATL | 8.66 | 193905190_ATL_PIT |
| Red Ruffing | NYA | 6.14 | 193905190_CHA_NYA |
| Lefty Grove | BOS | 4.42 | 193905210_DET_BOS |
| Carl Hubbell | SFN | 3.74 | 193905210_SFN_PIT |
| Dizzy Dean | CHN | 2.57 | 193905210_ATL_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Hugh Mulcahy | PHI | -2.8 | 193905210_PHI_SLN |
| Roxie Lawson | BAL | -2.14 | 193905210_BAL_OAK |
| Oral Hildebrand | NYA | -1.86 | 193905200_CHA_NYA |
| Buck Ross | OAK | -1.83 | 193905190_DET_OAK |
| Ken Chase | MIN | -1.56 | 193905190_CLE_MIN |
Based on accumulated WAA for this season up to 1939-05-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.32 | Lou Fette | 51.7 | ATL |
| +002+ | 2.95 | Curt Davis | 56 | SLN |
| +003+ | 2.8 | Tommy Bridges | 51 | DET |
| +004+ | 2.71 | Red Ruffing | 50 | NYA |
| +005+ | 2.59 | Lon Warneke | 52.3 | SLN |
| +010+ | 1.97 | Whit Wyatt | 44.7 | LAN |
| +011+ | 1.91 | Bill Lee | 56.7 | CHN |
| +016+ | 1.71 | Bucky Walters | 59.3 | CIN |
| +018+ | 1.65 | George Caster | 50.3 | OAK |
| +022+ | 1.56 | Willis Hudlin | 49.3 | CLE |
| +023+ | 1.55 | Woody Rich | 34.3 | BOS |
| +024+ | 1.52 | Vito Tamulis | 34.7 | LAN |
| +026+ | 1.51 | Whitey Moore | 46.3 | CIN |
| +029+ | 1.43 | Ted Lyons | 35 | CHA |
| +028+ | 1.43 | Al Milnar | 37 | CLE |
| +030+ | 1.41 | Joe Bowman | 38 | PIT |
| +032+ | 1.33 | Bob Feller | 62.3 | CLE |
| +034+ | 1.3 | Dizzy Dean | 14 | CHN |
| +035+ | 1.3 | Danny MacFayden | 41.7 | ATL |
| XXXXX | 1.17 | Syl Johnson | 17.3 | PHI |
| XXXXX | 1.14 | Lefty Grove | 43.3 | BOS |
| XXXXX | 1.06 | Van Mungo | 29.3 | LAN |
| XXXXX | 0.97 | Atley Donald | 16.7 | NYA |
| XXXXX | 0.94 | Harry Gumbert | 55.7 | SFN |
| XXXXX | 0.93 | Lee Grissom | 25 | CIN |
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