| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 7.38 | 193908040_LAN_CIN |
| Lou Fette | ATL | 4.86 | 193908040_ATL_CHN |
| Atley Donald | NYA | 1.92 | 193908020_DET_NYA |
| Hugh Casey | LAN | 1.45 | 193908040_LAN_CIN |
| Bill Lohrman | SFN | 0.9 | 193908020_SFN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Mills | BAL | -4.51 | 193908030_BAL_MIN |
| Buck Ross | OAK | -4.12 | 193908021_CHA_OAK |
| Hugh Mulcahy | PHI | -1.56 | 193908030_PHI_CHN |
| Max Butcher | PIT | -1.29 | 193908030_LAN_PIT |
| Alex Carrasquel | MIN | -0.94 | 193908040_CHA_MIN |
Based on accumulated WAA for this season up to 1939-08-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.91 | Bucky Walters | 205.3 | CIN |
| +005+ | 6.05 | Red Ruffing | 153 | NYA |
| +007+ | 5.81 | Lou Fette | 120.3 | ATL |
| +008+ | 5.71 | Bob Feller | 183.3 | CLE |
| +014+ | 4.64 | Paul Derringer | 177.7 | CIN |
| +015+ | 4.63 | Atley Donald | 118.3 | NYA |
| +017+ | 4.44 | Whit Wyatt | 109 | LAN |
| +019+ | 4.3 | Lefty Grove | 129 | BOS |
| +020+ | 4.25 | Bump Hadley | 100 | NYA |
| +021+ | 4.2 | Hugh Casey | 122 | LAN |
| +022+ | 3.89 | Whitey Moore | 130 | CIN |
| +024+ | 3.86 | Tommy Bridges | 139.7 | DET |
| +025+ | 3.68 | Mort Cooper | 122 | SLN |
| +028+ | 3.47 | Bill Posedel | 147.7 | ATL |
| +030+ | 3.45 | Mace Brown | 116.7 | PIT |
| +029+ | 3.45 | Claude Passeau | 168 | TOT |
| +033+ | 3.12 | Bill Lohrman | 119.7 | SFN |
| +034+ | 3.04 | Carl Hubbell | 73.3 | SFN |
| +035+ | 3.03 | Ted Lyons | 117 | CHA |
| +038+ | 2.98 | Curt Davis | 163 | SLN |
| +039+ | 2.95 | Dutch Leonard | 163.3 | MIN |
| +040+ | 2.93 | Danny MacFayden | 140 | ATL |
| +043+ | 2.81 | Milt Shoffner | 119.7 | ATL |
| +045+ | 2.77 | Bobo Newsom | 191.3 | TOT |
| +047+ | 2.66 | Lon Warneke | 130.7 | SLN |
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