| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lou Fette | ATL | 8.41 | 193907021_ATL_PHI |
| Lefty Grove | BOS | 5.19 | 193907021_NYA_BOS |
| Bob Feller | CLE | 3.81 | 193907030_CLE_DET |
| Lefty Gomez | NYA | 3.64 | 193907021_NYA_BOS |
| Russ Bauers | PIT | 2.78 | 193907041_CIN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Hugh Mulcahy | PHI | -4.3 | 193907021_ATL_PHI |
| Lefty Mills | BAL | -3.53 | 193907021_BAL_CLE |
| Johnny Marcum | CHA | -3.05 | 193907030_CHA_BAL |
| Earl Whitehill | CHN | -1.16 | 193907041_SLN_CHN |
| Alex Carrasquel | MIN | -1.11 | 193907042_MIN_NYA |
Based on accumulated WAA for this season up to 1939-07-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.2 | Tommy Bridges | 112.7 | DET |
| +002+ | 5.73 | Bob Feller | 140 | CLE |
| +005+ | 4.97 | Bucky Walters | 133.3 | CIN |
| +008+ | 4.53 | Lou Fette | 91 | ATL |
| +009+ | 4.52 | Red Ruffing | 108 | NYA |
| +011+ | 4.03 | Whit Wyatt | 82.3 | LAN |
| +014+ | 3.61 | Mace Brown | 71.7 | PIT |
| +017+ | 3.49 | Atley Donald | 75.3 | NYA |
| +018+ | 3.38 | Lefty Grove | 96 | BOS |
| +022+ | 3.15 | Paul Derringer | 125.7 | CIN |
| +025+ | 2.95 | Curt Davis | 119.7 | SLN |
| +028+ | 2.9 | Bump Hadley | 75.7 | NYA |
| +027+ | 2.9 | Whitey Moore | 98 | CIN |
| +031+ | 2.59 | Bobo Newsom | 134.3 | TOT |
| +033+ | 2.48 | Bill Lohrman | 79 | SFN |
| +034+ | 2.47 | Lefty Gomez | 90 | NYA |
| +036+ | 2.45 | Lon Warneke | 102.3 | SLN |
| +041+ | 2.26 | Claude Passeau | 120 | TOT |
| +045+ | 2.05 | Milt Shoffner | 80.7 | ATL |
| +047+ | 2.01 | Dizzy Dean | 52.3 | CHN |
| +048+ | 1.96 | Hugh Casey | 69 | LAN |
| +051+ | 1.83 | Bill Swift | 50.3 | PIT |
| +053+ | 1.76 | Bill Posedel | 92.7 | ATL |
| +054+ | 1.75 | Dutch Leonard | 112.3 | MIN |
| +056+ | 1.65 | Harry Gumbert | 115.7 | SFN |
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