| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | 4.73 | 193906291_NYA_MIN |
| Bob Weiland | SLN | 2.08 | 193906290_CHN_SLN |
| Bill Lee | CHN | 1.68 | 193906290_CHN_SLN |
| Danny MacFayden | ATL | 1.53 | 193906290_ATL_SFN |
| Bucky Walters | CIN | 1.47 | 193907010_CIN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Buck Ross | OAK | -3.47 | 193907010_OAK_MIN |
| Johnny Marcum | CHA | -2.34 | 193906292_BAL_CHA |
| Vern Kennedy | BAL | -0.92 | 193906292_BAL_CHA |
| Joe Haynes | MIN | -0.81 | 193907010_OAK_MIN |
| Bobo Newsom | DET | -0.74 | 193906300_CHA_DET |
Based on accumulated WAA for this season up to 1939-07-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.41 | Tommy Bridges | 103.7 | DET |
| +002+ | 5.11 | Bob Feller | 131 | CLE |
| +003+ | 5.08 | Lou Fette | 91 | ATL |
| +004+ | 4.97 | Bucky Walters | 132.7 | CIN |
| +007+ | 4.6 | Whit Wyatt | 80.7 | LAN |
| +009+ | 4.42 | Red Ruffing | 108 | NYA |
| +013+ | 3.42 | Atley Donald | 75.3 | NYA |
| +014+ | 3.39 | Whitey Moore | 97.7 | CIN |
| +021+ | 3.1 | Lon Warneke | 97 | SLN |
| +023+ | 3.05 | Lefty Gomez | 82 | NYA |
| +024+ | 3.03 | Lefty Grove | 87 | BOS |
| +027+ | 2.88 | Bill Lohrman | 69.3 | SFN |
| +028+ | 2.84 | Curt Davis | 117.3 | SLN |
| +031+ | 2.54 | Paul Derringer | 116.7 | CIN |
| +035+ | 2.41 | Dizzy Dean | 44 | CHN |
| +036+ | 2.34 | Bump Hadley | 66.7 | NYA |
| +044+ | 2.01 | Hugh Casey | 63.7 | LAN |
| +046+ | 1.91 | Bob Weiland | 68.7 | SLN |
| +049+ | 1.82 | Bob Klinger | 110 | PIT |
| +050+ | 1.71 | Claude Passeau | 111.3 | TOT |
| +052+ | 1.67 | Bill Posedel | 92.7 | ATL |
| +054+ | 1.58 | Oral Hildebrand | 63.3 | NYA |
| +055+ | 1.58 | Bobo Newsom | 125.3 | TOT |
| +056+ | 1.57 | Ted Lyons | 80 | CHA |
| +058+ | 1.56 | Syl Johnson | 37 | PHI |
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