| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | 5.89 | 193908010_DET_NYA |
| Bob Feller | CLE | 4.42 | 193908010_CLE_BOS |
| Lefty Grove | BOS | 3.92 | 193908010_CLE_BOS |
| Paul Derringer | CIN | 3.33 | 193908010_SFN_CIN |
| Danny MacFayden | ATL | 2.2 | 193908010_ATL_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Vern Kennedy | BAL | -4.69 | 193908010_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 |
| Schoolboy Rowe | DET | -0.7 | 193908020_DET_NYA |
Based on accumulated WAA for this season up to 1939-08-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.69 | Bucky Walters | 196.3 | CIN |
| +004+ | 6.09 | Red Ruffing | 153 | NYA |
| +007+ | 5.73 | Bob Feller | 183.3 | CLE |
| +011+ | 5.24 | Lou Fette | 112.3 | ATL |
| +014+ | 4.68 | Paul Derringer | 177.7 | CIN |
| +015+ | 4.67 | Atley Donald | 118.3 | NYA |
| +016+ | 4.45 | Whit Wyatt | 109 | LAN |
| +018+ | 4.37 | Hugh Casey | 117 | LAN |
| +019+ | 4.34 | Lefty Grove | 129 | BOS |
| +020+ | 4.27 | Bump Hadley | 100 | NYA |
| +023+ | 3.92 | Whitey Moore | 130 | CIN |
| +024+ | 3.9 | Tommy Bridges | 139.7 | DET |
| +025+ | 3.77 | Mort Cooper | 122 | SLN |
| +027+ | 3.51 | Mace Brown | 116.7 | PIT |
| +028+ | 3.49 | Bill Posedel | 147.7 | ATL |
| +030+ | 3.17 | Bill Lohrman | 119.7 | SFN |
| +033+ | 3.1 | Curt Davis | 163 | SLN |
| +034+ | 3.07 | Carl Hubbell | 73.3 | SFN |
| +035+ | 3.06 | Ted Lyons | 117 | CHA |
| +037+ | 3.02 | Dutch Leonard | 163.3 | MIN |
| +038+ | 2.94 | Danny MacFayden | 140 | ATL |
| +041+ | 2.82 | Milt Shoffner | 119.7 | ATL |
| +040+ | 2.82 | Bobo Newsom | 191.3 | TOT |
| +045+ | 2.76 | Lon Warneke | 130.7 | SLN |
| +046+ | 2.62 | Claude Passeau | 159 | TOT |
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