| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | 6.53 | 193905250_DET_NYA |
| Danny MacFayden | ATL | 4.6 | 193905230_ATL_CHN |
| Carl Hubbell | SFN | 3.42 | 193905250_SFN_CIN |
| Curt Davis | SLN | 1.77 | 193905240_ATL_SLN |
| Van Mungo | LAN | 1.57 | 193905230_LAN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roxie Lawson | BAL | -3.89 | 193905250_BAL_MIN |
| Hugh Mulcahy | PHI | -3.22 | 193905250_PHI_CHN |
| Bobo Newsom | DET | -2.26 | 193905230_DET_BOS |
| Wes Ferrell | NYA | -1.75 | 193905240_DET_NYA |
| Buck Ross | OAK | -1.63 | 193905240_CHA_OAK |
Based on accumulated WAA for this season up to 1939-05-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.91 | Curt Davis | 66 | SLN |
| +002+ | 3.47 | Lou Fette | 57 | ATL |
| +003+ | 3.15 | Red Ruffing | 59 | NYA |
| +004+ | 2.81 | Tommy Bridges | 51 | DET |
| +005+ | 2.58 | Lon Warneke | 52.3 | SLN |
| +006+ | 2.44 | Willis Hudlin | 58.3 | CLE |
| +011+ | 2.21 | Bob Feller | 71.3 | CLE |
| +013+ | 2.06 | Whit Wyatt | 44.7 | LAN |
| +015+ | 2.04 | Whitey Moore | 54 | CIN |
| +020+ | 1.71 | Bucky Walters | 59.3 | CIN |
| +021+ | 1.65 | Joe Bowman | 47 | PIT |
| +022+ | 1.63 | Bill Lee | 64.7 | CHN |
| +026+ | 1.44 | Al Milnar | 37 | CLE |
| +027+ | 1.43 | Ted Lyons | 35 | CHA |
| +029+ | 1.41 | Van Mungo | 37.3 | LAN |
| +033+ | 1.32 | Archie McKain | 33.3 | DET |
| +035+ | 1.31 | Dizzy Dean | 14 | CHN |
| +036+ | 1.3 | Carl Hubbell | 21.3 | SFN |
| +037+ | 1.29 | Syl Johnson | 18.3 | PHI |
| XXXXX | 1.23 | Bob Weiland | 36.3 | SLN |
| XXXXX | 1.21 | Bill McGee | 21 | SLN |
| XXXXX | 1.21 | Atley Donald | 25.7 | NYA |
| XXXXX | 1.19 | Alex Carrasquel | 38.7 | MIN |
| XXXXX | 1.18 | Kirby Higbe | 21.7 | CHN |
| XXXXX | 1.17 | George Caster | 56.3 | OAK |
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