| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 12.27 | 193909231_PIT_CIN |
| Bob Feller | CLE | 4.73 | 193909220_DET_CLE |
| Claude Passeau | CHN | 1.88 | 193909210_SFN_CHN |
| Marius Russo | NYA | 1.11 | 193909210_CHA_NYA |
| Mace Brown | PIT | 1.03 | 193909221_PIT_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Kramer | BAL | -3.68 | 193909210_BAL_BOS |
| Cotton Pippen | DET | -2.59 | 193909210_DET_OAK |
| Bill Beckmann | OAK | -1.1 | 193909210_DET_OAK |
| Ray Harrell | PHI | -1.03 | 193909232_LAN_PHI |
| Bill Dietrich | CHA | -0.64 | 193909210_CHA_NYA |
Based on accumulated WAA for this season up to 1939-09-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.6 | Bucky Walters | 306 | CIN |
| +005+ | 8.81 | Bob Feller | 279 | CLE |
| +008+ | 7.58 | Paul Derringer | 283 | CIN |
| +011+ | 7.21 | Red Ruffing | 233.3 | NYA |
| +013+ | 7.1 | Lefty Grove | 182 | BOS |
| +017+ | 6.1 | Claude Passeau | 259.3 | TOT |
| +018+ | 6.08 | Bob Bowman | 165 | SLN |
| +020+ | 5.83 | Carl Hubbell | 145 | SFN |
| +021+ | 5.81 | Ted Lyons | 163.7 | CHA |
| +022+ | 5.79 | Hugh Casey | 207.7 | LAN |
| +029+ | 5.01 | Marius Russo | 116 | NYA |
| +030+ | 4.74 | Bump Hadley | 145 | NYA |
| +032+ | 4.57 | Junior Thompson | 137.7 | CIN |
| +035+ | 4.28 | Bobo Newsom | 280.7 | TOT |
| +037+ | 4.26 | Lou Fette | 146 | ATL |
| +039+ | 4.2 | Bill Lee | 273.3 | CHN |
| +040+ | 4.15 | Steve Sundra | 113.7 | NYA |
| +041+ | 4.08 | Dutch Leonard | 260.3 | MIN |
| +042+ | 4.03 | Mort Cooper | 193.3 | SLN |
| +044+ | 3.98 | Milt Shoffner | 167 | TOT |
| +045+ | 3.87 | Mace Brown | 196.7 | PIT |
| +046+ | 3.74 | Lefty Gomez | 192 | NYA |
| +048+ | 3.56 | Larry French | 185.7 | CHN |
| +050+ | 3.49 | Oral Hildebrand | 117.7 | NYA |
| +051+ | 3.48 | Johnny Rigney | 214 | CHA |
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