| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 5.56 | 193907211_CIN_LAN |
| Red Ruffing | NYA | 4.84 | 193907200_NYA_BAL |
| Danny MacFayden | ATL | 3.46 | 193907220_PIT_ATL |
| Bob Klinger | PIT | 1.52 | 193907200_PIT_SFN |
| Bob Weiland | SLN | 1.2 | 193907220_SLN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lynn Nelson | OAK | -2.52 | 193907221_OAK_DET |
| George Gill | BAL | -2.39 | 193907210_BOS_BAL |
| Joe Haynes | MIN | -2.15 | 193907210_MIN_CLE |
| Schoolboy Rowe | DET | -0.8 | 193907222_OAK_DET |
| Jack Wilson | BOS | -0.77 | 193907220_BOS_BAL |
Based on accumulated WAA for this season up to 1939-07-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.73 | Bucky Walters | 178.3 | CIN |
| +003+ | 5.59 | Red Ruffing | 135 | NYA |
| +005+ | 5.5 | Bob Feller | 160.3 | CLE |
| +011+ | 4.77 | Atley Donald | 104.3 | NYA |
| +012+ | 4.65 | Lou Fette | 102.3 | ATL |
| +013+ | 4.39 | Bump Hadley | 90.3 | NYA |
| +015+ | 4.34 | Whit Wyatt | 109 | LAN |
| +014+ | 4.34 | Mace Brown | 99.3 | PIT |
| +016+ | 4.23 | Paul Derringer | 158.7 | CIN |
| +019+ | 3.89 | Tommy Bridges | 122.7 | DET |
| +020+ | 3.87 | Lefty Grove | 111 | BOS |
| +026+ | 3.45 | Mort Cooper | 101 | SLN |
| +027+ | 3.17 | Bill Posedel | 125.7 | ATL |
| +028+ | 3.16 | Lefty Gomez | 105 | NYA |
| +031+ | 3.07 | Whitey Moore | 109.7 | CIN |
| +033+ | 2.96 | Danny MacFayden | 125.7 | ATL |
| +034+ | 2.93 | Hugh Casey | 94 | LAN |
| +036+ | 2.78 | Bill Lohrman | 96.3 | SFN |
| +038+ | 2.62 | Milt Shoffner | 107.3 | ATL |
| +039+ | 2.57 | Claude Passeau | 149.7 | TOT |
| +044+ | 2.47 | Bobo Newsom | 169 | TOT |
| +045+ | 2.41 | Bob Klinger | 137.7 | PIT |
| +046+ | 2.4 | Ted Lyons | 100 | CHA |
| +048+ | 2.34 | Lon Warneke | 110.7 | SLN |
| +050+ | 2.31 | Curt Davis | 141 | SLN |
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