| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 10.64 | 193909080_CIN_PIT |
| Red Ruffing | NYA | 4.67 | 193909080_BOS_NYA |
| Bob Feller | CLE | 4.63 | 193909080_CLE_BAL |
| Hugh Casey | LAN | 2.56 | 193909090_SFN_LAN |
| Carl Hubbell | SFN | 2.41 | 193909070_SFN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Nels Potter | OAK | -6.24 | 193909070_MIN_OAK |
| Vern Kennedy | BAL | -3.62 | 193909071_CHA_BAL |
| Joe Haynes | MIN | -2.17 | 193909090_MIN_NYA |
| Elden Auker | BOS | -1.2 | 193909090_BOS_OAK |
| Hugh Mulcahy | PHI | -0.49 | 193909082_PHI_LAN |
Based on accumulated WAA for this season up to 1939-09-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 11.86 | Bucky Walters | 269 | CIN |
| +005+ | 8.47 | Bob Feller | 252 | CLE |
| +006+ | 8.17 | Red Ruffing | 219 | NYA |
| +010+ | 6.57 | Paul Derringer | 247 | CIN |
| +013+ | 6.28 | Lefty Grove | 166 | BOS |
| +014+ | 5.96 | Hugh Casey | 186 | LAN |
| +021+ | 5.06 | Ted Lyons | 147.7 | CHA |
| +022+ | 4.99 | Carl Hubbell | 125 | SFN |
| +030+ | 4.29 | Claude Passeau | 226.3 | TOT |
| +031+ | 4.21 | Lou Fette | 146 | ATL |
| +032+ | 4.04 | Marius Russo | 89 | NYA |
| +033+ | 4.03 | Bob Bowman | 137 | SLN |
| +034+ | 3.91 | Dutch Leonard | 226.3 | MIN |
| +035+ | 3.86 | Steve Sundra | 95.7 | NYA |
| +037+ | 3.82 | Bump Hadley | 129 | NYA |
| +038+ | 3.77 | Mace Brown | 172.3 | PIT |
| +040+ | 3.57 | Milt Shoffner | 154.7 | TOT |
| +041+ | 3.51 | Johnny Rigney | 189 | CHA |
| +043+ | 3.43 | Mort Cooper | 169.3 | SLN |
| +046+ | 3.25 | Bill Lee | 240.3 | CHN |
| +048+ | 3.19 | Larry French | 156.3 | CHN |
| +049+ | 3.19 | Bill Lohrman | 167.7 | SFN |
| +050+ | 3.17 | Lefty Gomez | 173 | NYA |
| +051+ | 3.15 | Curt Davis | 211.3 | SLN |
| +052+ | 3.13 | Bill Posedel | 199.3 | ATL |
_