| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 7.71 | 193908201_SLN_CIN |
| Carl Hubbell | SFN | 2.54 | 193908202_SFN_PHI |
| Mort Cooper | SLN | 1.6 | 193908190_SLN_CIN |
| Bob Klinger | PIT | 1.59 | 193908201_CHN_PIT |
| Lefty Gomez | NYA | 1.07 | 193908201_OAK_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Buck Ross | OAK | -4.37 | 193908201_OAK_NYA |
| Vern Kennedy | BAL | -2.79 | 193908200_DET_BAL |
| Joe Haynes | MIN | -2 | 193908191_BOS_MIN |
| Max Butcher | PIT | -0.91 | 193908202_CHN_PIT |
| Hugh Mulcahy | PHI | -0.84 | 193908202_SFN_PHI |
Based on accumulated WAA for this season up to 1939-08-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.2 | Bucky Walters | 235 | CIN |
| +003+ | 8.54 | Red Ruffing | 186 | NYA |
| +005+ | 7.47 | Bob Feller | 211.3 | CLE |
| +011+ | 5.53 | Lefty Grove | 147 | BOS |
| +013+ | 5.38 | Lou Fette | 135.7 | ATL |
| +014+ | 4.79 | Carl Hubbell | 103 | SFN |
| +016+ | 4.66 | Curt Davis | 192 | SLN |
| +017+ | 4.55 | Mort Cooper | 146.7 | SLN |
| +021+ | 4.37 | Paul Derringer | 210 | CIN |
| +026+ | 4.04 | Hugh Casey | 141.7 | LAN |
| +030+ | 3.87 | Ted Lyons | 129.7 | CHA |
| +031+ | 3.8 | Dutch Leonard | 194.3 | MIN |
| +033+ | 3.73 | Bob Bowman | 115.3 | SLN |
| +034+ | 3.65 | Claude Passeau | 195 | TOT |
| +035+ | 3.57 | Tommy Bridges | 164 | DET |
| +036+ | 3.49 | Milt Shoffner | 135.7 | TOT |
| +037+ | 3.45 | Bill Lohrman | 147.7 | SFN |
| +040+ | 3.34 | Mace Brown | 139.3 | PIT |
| +042+ | 3.19 | Steve Sundra | 73 | NYA |
| +046+ | 3.05 | Atley Donald | 129.7 | NYA |
| +051+ | 2.85 | Bob Weiland | 110.7 | SLN |
| +052+ | 2.77 | Bob Klinger | 181 | PIT |
| +055+ | 2.67 | Whitey Moore | 150.3 | CIN |
| +056+ | 2.53 | Bill Lee | 210 | CHN |
| +058+ | 2.41 | Bill Swift | 93.3 | PIT |
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