| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lou Fette | ATL | 9.01 | 193906240_ATL_SLN |
| Red Ruffing | NYA | 4.67 | 193906240_BAL_NYA |
| Bob Feller | CLE | 2.88 | 193906230_CLE_OAK |
| Russ Bauers | PIT | 2.4 | 193906230_LAN_PIT |
| Bob Weiland | SLN | 1.93 | 193906240_ATL_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Hugh Mulcahy | PHI | -4.37 | 193906240_PHI_CHN |
| Buck Ross | OAK | -3.02 | 193906251_CLE_OAK |
| Johnny Marcum | CHA | -2.2 | 193906240_CHA_BOS |
| Jim Bagby | BOS | -1.33 | 193906240_CHA_BOS |
| Oral Hildebrand | NYA | -0.83 | 193906252_BAL_NYA |
Based on accumulated WAA for this season up to 1939-06-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.26 | Bucky Walters | 122.7 | CIN |
| +002+ | 4.98 | Lou Fette | 82 | ATL |
| +003+ | 4.93 | Tommy Bridges | 94.7 | DET |
| +006+ | 4.23 | Bob Feller | 122 | CLE |
| +009+ | 3.8 | Whit Wyatt | 64.7 | LAN |
| +010+ | 3.61 | Red Ruffing | 96.3 | NYA |
| +011+ | 3.45 | Curt Davis | 114.7 | SLN |
| +018+ | 2.98 | Dizzy Dean | 43.3 | CHN |
| +021+ | 2.78 | Whitey Moore | 91.3 | CIN |
| +020+ | 2.78 | Atley Donald | 69.3 | NYA |
| +022+ | 2.73 | Lon Warneke | 89 | SLN |
| +028+ | 2.49 | Bob Weiland | 68 | SLN |
| +029+ | 2.44 | Willis Hudlin | 95.7 | CLE |
| +033+ | 2.2 | Bill Lohrman | 60.3 | SFN |
| +035+ | 2.14 | Lefty Grove | 78 | BOS |
| +038+ | 2.1 | Lefty Gomez | 73 | NYA |
| +041+ | 1.99 | Hugh Casey | 56.7 | LAN |
| +042+ | 1.92 | Bump Hadley | 58.7 | NYA |
| +044+ | 1.83 | Bob Klinger | 110 | PIT |
| +047+ | 1.68 | Claude Passeau | 104.7 | TOT |
| +048+ | 1.67 | Paul Derringer | 107.7 | CIN |
| +052+ | 1.59 | George Caster | 96 | OAK |
| +054+ | 1.56 | Syl Johnson | 37 | PHI |
| +055+ | 1.51 | Bobo Newsom | 114.3 | TOT |
| +058+ | 1.49 | Russ Bauers | 22.7 | PIT |
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