| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lou Fette | ATL | 7.7 | 193906182_ATL_CIN |
| Lefty Grove | BOS | 4.11 | 193906182_CLE_BOS |
| Bob Feller | CLE | 3.39 | 193906181_CLE_BOS |
| Dizzy Dean | CHN | 2.43 | 193906181_LAN_CHN |
| Paul Derringer | CIN | 2.16 | 193906182_ATL_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roxie Lawson | BAL | -4.02 | 193906192_BAL_MIN |
| Oral Hildebrand | NYA | -0.79 | 193906190_DET_NYA |
| Nels Potter | OAK | -0.69 | 193906182_CHA_OAK |
| Johnny Rigney | CHA | -0.58 | 193906182_CHA_OAK |
| Ken Chase | MIN | -0.57 | 193906200_CLE_MIN |
Based on accumulated WAA for this season up to 1939-06-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.18 | Lou Fette | 80.7 | ATL |
| +002+ | 4.86 | Tommy Bridges | 94.7 | DET |
| +003+ | 4.72 | Bucky Walters | 113.7 | CIN |
| +005+ | 4.22 | Bob Feller | 112.7 | CLE |
| +008+ | 3.54 | Willis Hudlin | 93 | CLE |
| +009+ | 3.52 | Whitey Moore | 86.7 | CIN |
| +011+ | 3.34 | Lon Warneke | 85 | SLN |
| +013+ | 3.09 | Whit Wyatt | 55.7 | LAN |
| +017+ | 2.87 | Red Ruffing | 87.3 | NYA |
| +018+ | 2.83 | Lefty Gomez | 68 | NYA |
| +026+ | 2.48 | Hugh Casey | 51.3 | LAN |
| +030+ | 2.31 | Curt Davis | 97.7 | SLN |
| +031+ | 2.28 | Dizzy Dean | 34.3 | CHN |
| +035+ | 2.1 | Lefty Grove | 78 | BOS |
| +037+ | 2.06 | Atley Donald | 60.3 | NYA |
| +036+ | 2.06 | Paul Derringer | 101.7 | CIN |
| +038+ | 2.05 | Bill Swift | 42.7 | PIT |
| +039+ | 2 | Dick Errickson | 40.7 | ATL |
| +040+ | 1.98 | Bob Weiland | 59 | SLN |
| +042+ | 1.89 | Bump Hadley | 58.7 | NYA |
| +045+ | 1.8 | Bob Klinger | 97.7 | PIT |
| +046+ | 1.75 | Bill McGee | 54.7 | SLN |
| +049+ | 1.7 | Bobo Newsom | 106.7 | TOT |
| +055+ | 1.5 | Syl Johnson | 37 | PHI |
| +059+ | 1.36 | Vern Kennedy | 94.7 | TOT |
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