| 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 |
| Claude Passeau | CHN | 1.66 | 193909080_SLN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Buck Ross | OAK | -4.04 | 193909090_BOS_OAK |
| George Gill | BAL | -3.59 | 193909090_CLE_BAL |
| Joe Haynes | MIN | -2.17 | 193909090_MIN_NYA |
| Elden Auker | BOS | -1.2 | 193909090_BOS_OAK |
| Bill Dietrich | CHA | -0.52 | 193909102_CHA_DET |
Based on accumulated WAA for this season up to 1939-09-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.9 | Bucky Walters | 269 | CIN |
| +005+ | 8.63 | Bob Feller | 253 | CLE |
| +006+ | 8.2 | Red Ruffing | 219 | NYA |
| +010+ | 7.07 | Paul Derringer | 256 | CIN |
| +013+ | 6.3 | Lefty Grove | 166 | BOS |
| +014+ | 5.99 | Hugh Casey | 186 | LAN |
| +021+ | 5.09 | Ted Lyons | 147.7 | CHA |
| +023+ | 5.02 | Carl Hubbell | 125 | SFN |
| +027+ | 4.54 | Bob Bowman | 142 | SLN |
| +028+ | 4.53 | Marius Russo | 98 | NYA |
| +032+ | 4.33 | Claude Passeau | 226.3 | TOT |
| +031+ | 4.33 | Bump Hadley | 136 | NYA |
| +034+ | 4.23 | Lou Fette | 146 | ATL |
| +035+ | 3.88 | Steve Sundra | 95.7 | NYA |
| +039+ | 3.6 | Milt Shoffner | 154.7 | TOT |
| +042+ | 3.53 | Dutch Leonard | 234.3 | MIN |
| +041+ | 3.53 | Mace Brown | 176 | PIT |
| +044+ | 3.45 | Mort Cooper | 169.3 | SLN |
| +045+ | 3.44 | Curt Davis | 220.3 | SLN |
| +046+ | 3.43 | Bobo Newsom | 256.3 | TOT |
| +048+ | 3.31 | Johnny Rigney | 195 | CHA |
| +049+ | 3.29 | Bill Lee | 240.3 | CHN |
| +050+ | 3.22 | Bill Lohrman | 167.7 | SFN |
| +051+ | 3.19 | Lefty Gomez | 173 | NYA |
| +052+ | 3.16 | Bill Posedel | 199.3 | ATL |
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