| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 12.22 | 193909270_SLN_CIN |
| Bob Feller | CLE | 5.19 | 193909272_CLE_CHA |
| Lefty Grove | BOS | 3.4 | 193909281_BOS_MIN |
| Hugh Casey | LAN | 2.42 | 193909261_LAN_SFN |
| Carl Hubbell | SFN | 2.27 | 193909261_LAN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Kramer | BAL | -4.31 | 193909262_DET_BAL |
| Ike Pearson | PHI | -1.66 | 193909281_SFN_PHI |
| Bill Beckmann | OAK | -1.53 | 193909260_OAK_MIN |
| Schoolboy Rowe | DET | -0.59 | 193909262_DET_BAL |
| Hal Schumacher | SFN | -0.4 | 193909282_SFN_PHI |
Based on accumulated WAA for this season up to 1939-09-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.85 | Bucky Walters | 315 | CIN |
| +005+ | 8.95 | Bob Feller | 286 | CLE |
| +008+ | 8.71 | Paul Derringer | 301 | CIN |
| +010+ | 7.58 | Lefty Grove | 191 | BOS |
| +013+ | 7.2 | Red Ruffing | 233.3 | NYA |
| +017+ | 6.29 | Bob Bowman | 169 | SLN |
| +019+ | 6.12 | Ted Lyons | 172.7 | CHA |
| +022+ | 5.75 | Carl Hubbell | 154 | SFN |
| +024+ | 5.5 | Claude Passeau | 266.3 | TOT |
| +027+ | 5.24 | Junior Thompson | 146.7 | CIN |
| +029+ | 5.17 | Hugh Casey | 211.3 | LAN |
| +030+ | 5 | Marius Russo | 116 | NYA |
| +031+ | 4.94 | Mort Cooper | 202.3 | SLN |
| +033+ | 4.75 | Dutch Leonard | 269.3 | MIN |
| +036+ | 4.58 | Bump Hadley | 154 | NYA |
| +037+ | 4.33 | Lou Fette | 146 | ATL |
| +039+ | 4.17 | Bill Lee | 273.3 | CHN |
| +040+ | 4.16 | Bobo Newsom | 286.7 | TOT |
| +041+ | 4.14 | Steve Sundra | 113.7 | NYA |
| +042+ | 4.13 | Milt Shoffner | 170 | TOT |
| +044+ | 3.9 | Lefty Gomez | 198 | NYA |
| +046+ | 3.84 | Mace Brown | 196.7 | PIT |
| +047+ | 3.6 | Cliff Melton | 205.3 | SFN |
| +048+ | 3.6 | Mel Harder | 200.7 | CLE |
| +049+ | 3.54 | Oral Hildebrand | 126.7 | NYA |
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