| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 9.97 | 193909020_CHN_CIN |
| Red Ruffing | NYA | 6.82 | 193909020_NYA_BOS |
| Bob Feller | CLE | 5.17 | 193909010_NYA_CLE |
| Lefty Grove | BOS | 3.44 | 193908310_BOS_DET |
| Hugh Casey | LAN | 1.75 | 193909022_LAN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Nels Potter | OAK | -6.95 | 193908310_OAK_BAL |
| Vern Kennedy | BAL | -3.12 | 193908310_OAK_BAL |
| Elden Auker | BOS | -0.82 | 193909010_BOS_DET |
| Ray Harrell | PHI | -0.68 | 193909010_ATL_PHI |
| Max Butcher | PIT | -0.4 | 193908311_PIT_PHI |
Based on accumulated WAA for this season up to 1939-09-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 11.08 | Bucky Walters | 250 | CIN |
| +005+ | 7.94 | Red Ruffing | 212 | NYA |
| +006+ | 7.89 | Bob Feller | 233.3 | CLE |
| +013+ | 5.85 | Lefty Grove | 158 | BOS |
| +014+ | 5.75 | Paul Derringer | 228 | CIN |
| +016+ | 5.31 | Hugh Casey | 168 | LAN |
| +018+ | 5.23 | Claude Passeau | 221.7 | TOT |
| +020+ | 4.87 | Curt Davis | 204 | SLN |
| +022+ | 4.64 | Mace Brown | 164.3 | PIT |
| +025+ | 4.5 | Ted Lyons | 138.7 | CHA |
| +027+ | 4.45 | Lou Fette | 139 | ATL |
| +028+ | 4.42 | Bump Hadley | 123 | NYA |
| +031+ | 4.2 | Carl Hubbell | 108 | SFN |
| +032+ | 4.16 | Bob Bowman | 136 | SLN |
| +034+ | 4.08 | Bill Lohrman | 156.7 | SFN |
| +036+ | 4.07 | Steve Sundra | 82 | NYA |
| +038+ | 3.92 | Bill Posedel | 193.3 | ATL |
| +039+ | 3.8 | Dutch Leonard | 217.3 | MIN |
| +043+ | 3.6 | Mort Cooper | 155.7 | SLN |
| +044+ | 3.46 | Atley Donald | 144.7 | NYA |
| +045+ | 3.34 | Milt Shoffner | 142.7 | TOT |
| +047+ | 3.24 | Marius Russo | 80 | NYA |
| +050+ | 3.12 | Whitey Moore | 154.7 | CIN |
| +053+ | 3.05 | Larry French | 147.3 | CHN |
| +054+ | 3 | Cliff Melton | 164.7 | SFN |
_