| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | BOS | 3.44 | 193908310_BOS_DET |
| Ted Lyons | CHA | 1.04 | 193908301_MIN_CHA |
| Bob Klinger | PIT | 0.86 | 193908312_PIT_PHI |
| Atley Donald | NYA | 0.64 | 193908290_NYA_DET |
| Dutch Leonard | MIN | 0.6 | 193908310_MIN_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Nels Potter | OAK | -6.95 | 193908310_OAK_BAL |
| Vern Kennedy | BAL | -3.12 | 193908310_OAK_BAL |
| Joe Haynes | MIN | -1.59 | 193908301_MIN_CHA |
| Max Butcher | PIT | -0.4 | 193908311_PIT_PHI |
| Jack Wilson | BOS | -0.35 | 193908300_BOS_DET |
Based on accumulated WAA for this season up to 1939-08-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.1 | Bucky Walters | 244 | CIN |
| +004+ | 9.21 | Red Ruffing | 204 | NYA |
| +006+ | 8.31 | Bob Feller | 229.3 | CLE |
| +013+ | 5.83 | Lefty Grove | 158 | BOS |
| +014+ | 5.74 | Paul Derringer | 228 | CIN |
| +017+ | 4.86 | Curt Davis | 204 | SLN |
| +018+ | 4.62 | Hugh Casey | 159 | LAN |
| +022+ | 4.52 | Claude Passeau | 212.7 | TOT |
| +023+ | 4.5 | Ted Lyons | 138.7 | CHA |
| +025+ | 4.42 | Lou Fette | 139 | ATL |
| +027+ | 4.41 | Bump Hadley | 123 | NYA |
| +028+ | 4.36 | Bob Bowman | 129.7 | SLN |
| +029+ | 4.34 | Mace Brown | 155.3 | PIT |
| +033+ | 4.2 | Carl Hubbell | 108 | SFN |
| +035+ | 4.08 | Bill Lohrman | 156.7 | SFN |
| +036+ | 4.06 | Steve Sundra | 82 | NYA |
| +038+ | 3.79 | Dutch Leonard | 217.3 | MIN |
| +041+ | 3.64 | Cliff Melton | 160.7 | SFN |
| +043+ | 3.6 | Mort Cooper | 155.7 | SLN |
| +044+ | 3.44 | Atley Donald | 144.7 | NYA |
| +045+ | 3.32 | Milt Shoffner | 142.7 | TOT |
| +050+ | 3.11 | Whitey Moore | 154.7 | CIN |
| +051+ | 3.03 | Marius Russo | 78 | NYA |
| +052+ | 3 | Bill Posedel | 184.3 | ATL |
| +056+ | 2.66 | Lefty Gomez | 164 | NYA |
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