| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | 4.73 | 193906291_NYA_MIN |
| Dizzy Dean | CHN | 3.43 | 193906280_CHN_SLN |
| Bob Weiland | SLN | 2.08 | 193906290_CHN_SLN |
| Danny MacFayden | ATL | 1.53 | 193906290_ATL_SFN |
| Bill Lohrman | SFN | 0.85 | 193906280_PHI_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Hugh Mulcahy | PHI | -2.98 | 193906280_PHI_SFN |
| Johnny Marcum | CHA | -2.34 | 193906292_BAL_CHA |
| Lynn Nelson | OAK | -1.32 | 193906281_NYA_OAK |
| Vern Kennedy | BAL | -0.92 | 193906292_BAL_CHA |
| Bobo Newsom | DET | -0.74 | 193906300_CHA_DET |
Based on accumulated WAA for this season up to 1939-06-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.43 | Tommy Bridges | 103.7 | DET |
| +002+ | 5.27 | Bucky Walters | 122.7 | CIN |
| +003+ | 5.12 | Bob Feller | 131 | CLE |
| +004+ | 5.08 | Lou Fette | 91 | ATL |
| +007+ | 4.59 | Whit Wyatt | 80.7 | LAN |
| +008+ | 4.41 | Red Ruffing | 108 | NYA |
| +013+ | 3.53 | Curt Davis | 115.7 | SLN |
| +014+ | 3.42 | Atley Donald | 75.3 | NYA |
| +015+ | 3.41 | Whitey Moore | 97.7 | CIN |
| +021+ | 3.11 | Lon Warneke | 97 | SLN |
| +023+ | 3.04 | Lefty Grove | 87 | BOS |
| +022+ | 3.04 | Lefty Gomez | 82 | NYA |
| +027+ | 2.89 | Bill Lohrman | 69.3 | SFN |
| +029+ | 2.57 | Paul Derringer | 116.7 | CIN |
| +033+ | 2.43 | Willis Hudlin | 95.7 | CLE |
| +034+ | 2.42 | Dizzy Dean | 44 | CHN |
| +038+ | 2.33 | Bump Hadley | 66.7 | NYA |
| +046+ | 1.92 | Bob Weiland | 68.7 | SLN |
| +047+ | 1.87 | Hugh Casey | 57.7 | LAN |
| +048+ | 1.84 | Bob Klinger | 110 | PIT |
| +051+ | 1.71 | Claude Passeau | 104.7 | TOT |
| +053+ | 1.58 | Bobo Newsom | 125.3 | TOT |
| +054+ | 1.58 | Ted Lyons | 80 | CHA |
| +056+ | 1.57 | Oral Hildebrand | 63.3 | NYA |
| +057+ | 1.57 | Syl Johnson | 37 | PHI |
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