| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 12.28 | 193909160_SFN_CIN |
| Bob Feller | CLE | 5.03 | 193909171_CLE_OAK |
| Red Ruffing | NYA | 4.07 | 193909171_BAL_NYA |
| Hugh Casey | LAN | 2.68 | 193909171_LAN_CHN |
| Claude Passeau | CHN | 1.69 | 193909172_LAN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Mills | BAL | -5.83 | 193909172_BAL_NYA |
| Buck Ross | OAK | -3.71 | 193909172_CLE_OAK |
| Joe Haynes | MIN | -2.46 | 193909160_BAL_MIN |
| Cotton Pippen | DET | -1.83 | 193909160_DET_NYA |
| Ray Harrell | PHI | -1.52 | 193909160_PHI_CHN |
Based on accumulated WAA for this season up to 1939-09-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.26 | Bucky Walters | 288 | CIN |
| +005+ | 8.72 | Bob Feller | 270 | CLE |
| +009+ | 7.28 | Paul Derringer | 274 | CIN |
| +010+ | 7.18 | Red Ruffing | 233.3 | NYA |
| +011+ | 7.11 | Lefty Grove | 175 | BOS |
| +015+ | 6.01 | Hugh Casey | 202 | LAN |
| +016+ | 5.88 | Ted Lyons | 158.7 | CHA |
| +018+ | 5.84 | Bob Bowman | 156.3 | SLN |
| +019+ | 5.77 | Claude Passeau | 250.3 | TOT |
| +027+ | 4.89 | Carl Hubbell | 136 | SFN |
| +029+ | 4.72 | Bump Hadley | 145 | NYA |
| +030+ | 4.52 | Marius Russo | 107 | NYA |
| +031+ | 4.51 | Dutch Leonard | 252.3 | MIN |
| +033+ | 4.33 | Bill Lee | 258.3 | CHN |
| +036+ | 4.2 | Lou Fette | 146 | ATL |
| +038+ | 4.16 | Mace Brown | 194 | PIT |
| +039+ | 4.08 | Steve Sundra | 104.7 | NYA |
| +040+ | 4.05 | Bobo Newsom | 265.3 | TOT |
| +042+ | 3.71 | Lefty Gomez | 192 | NYA |
| +043+ | 3.7 | Milt Shoffner | 162.7 | TOT |
| +044+ | 3.67 | Junior Thompson | 128.7 | CIN |
| +047+ | 3.6 | Mort Cooper | 185 | SLN |
| +048+ | 3.57 | Cliff Melton | 191.7 | SFN |
| +051+ | 3.24 | Larry French | 172.3 | CHN |
| +052+ | 3.23 | Curt Davis | 237 | SLN |
_