| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 6.9 | 193908160_CHN_CIN |
| Lou Fette | ATL | 4.28 | 193908150_PHI_ATL |
| Lefty Grove | BOS | 3.37 | 193908170_BOS_OAK |
| Bob Klinger | PIT | 1.71 | 193908161_SLN_PIT |
| Curt Davis | SLN | 1.69 | 193908170_SLN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Mills | BAL | -4.73 | 193908170_CLE_BAL |
| Lynn Nelson | OAK | -2.09 | 193908150_BOS_OAK |
| Hugh Mulcahy | PHI | -1.21 | 193908162_PHI_ATL |
| Max Butcher | PIT | -1.04 | 193908162_SLN_PIT |
| Jack Wilson | BOS | -0.58 | 193908150_BOS_OAK |
Based on accumulated WAA for this season up to 1939-08-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.4 | Bucky Walters | 227.3 | CIN |
| +003+ | 7.74 | Red Ruffing | 177 | NYA |
| +006+ | 6.81 | Bob Feller | 201.3 | CLE |
| +011+ | 5.59 | Lefty Grove | 147 | BOS |
| +012+ | 5.52 | Lou Fette | 135.7 | ATL |
| +016+ | 4.73 | Curt Davis | 190 | SLN |
| +017+ | 4.67 | Mort Cooper | 139.7 | SLN |
| +019+ | 4.4 | Paul Derringer | 201 | CIN |
| +021+ | 4.23 | Carl Hubbell | 95 | SFN |
| +023+ | 4.16 | Hugh Casey | 141.7 | LAN |
| +026+ | 3.99 | Ted Lyons | 129.7 | CHA |
| +029+ | 3.81 | Mace Brown | 139.3 | PIT |
| +030+ | 3.74 | Bump Hadley | 113 | NYA |
| +031+ | 3.69 | Bill Lohrman | 137 | SFN |
| +032+ | 3.68 | Bob Klinger | 179 | PIT |
| +033+ | 3.66 | Claude Passeau | 186 | TOT |
| +034+ | 3.65 | Tommy Bridges | 164 | DET |
| +036+ | 3.51 | Milt Shoffner | 132.3 | ATL |
| +039+ | 3.43 | Whitey Moore | 147.3 | CIN |
| +044+ | 3.13 | Atley Donald | 129.7 | NYA |
| +046+ | 3.01 | Dutch Leonard | 185.3 | MIN |
| +048+ | 2.92 | Bob Bowman | 105.7 | SLN |
| +049+ | 2.89 | Bobo Newsom | 212.3 | TOT |
| +053+ | 2.67 | Lefty Gomez | 141.7 | NYA |
| +059+ | 2.5 | Bob Weiland | 103.7 | SLN |
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