| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 11.79 | 193909120_LAN_CIN |
| Marius Russo | NYA | 1.01 | 193909101_MIN_NYA |
| Mort Cooper | SLN | 0.91 | 193909110_SLN_PIT |
| Bill Posedel | ATL | 0.9 | 193909120_ATL_CHN |
| Dutch Leonard | MIN | 0.81 | 193909102_MIN_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Nels Potter | OAK | -7.53 | 193909110_BOS_OAK |
| Vern Kennedy | BAL | -4.31 | 193909120_BAL_OAK |
| Alex Carrasquel | MIN | -0.66 | 193909120_CHA_MIN |
| Bill Dietrich | CHA | -0.52 | 193909102_CHA_DET |
| Denny Galehouse | BOS | -0.45 | 193909120_DET_BOS |
Based on accumulated WAA for this season up to 1939-09-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.64 | Bucky Walters | 279 | CIN |
| +005+ | 8.61 | Bob Feller | 253 | CLE |
| +006+ | 8.18 | Red Ruffing | 219 | NYA |
| +010+ | 7.05 | Paul Derringer | 256 | CIN |
| +013+ | 6.3 | Lefty Grove | 166 | BOS |
| +014+ | 5.99 | Hugh Casey | 186 | LAN |
| +022+ | 5.09 | Ted Lyons | 147.7 | CHA |
| +024+ | 5.02 | Carl Hubbell | 125 | SFN |
| +026+ | 4.85 | Bob Bowman | 145 | SLN |
| +030+ | 4.52 | Marius Russo | 98 | NYA |
| +031+ | 4.33 | Claude Passeau | 226.3 | TOT |
| +032+ | 4.32 | Bump Hadley | 136 | NYA |
| +034+ | 4.24 | Lou Fette | 146 | ATL |
| +035+ | 3.87 | Steve Sundra | 95.7 | NYA |
| +036+ | 3.76 | Bill Lee | 249.3 | CHN |
| +039+ | 3.61 | Milt Shoffner | 154.7 | TOT |
| +040+ | 3.52 | Mace Brown | 176 | PIT |
| +041+ | 3.52 | Dutch Leonard | 234.3 | MIN |
| +043+ | 3.45 | Curt Davis | 220.3 | SLN |
| +044+ | 3.44 | Bobo Newsom | 256.3 | TOT |
| +048+ | 3.33 | Lefty Gomez | 183 | NYA |
| +049+ | 3.31 | Johnny Rigney | 195 | CHA |
| +051+ | 3.22 | Bill Lohrman | 167.7 | SFN |
| +052+ | 3.12 | Mort Cooper | 174.3 | SLN |
| +053+ | 3.07 | Bob Weiland | 137.7 | SLN |
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