| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 6.05 | 193908120_CIN_SLN |
| Danny MacFayden | ATL | 2.04 | 193908100_ATL_SFN |
| Mace Brown | PIT | 1.35 | 193908120_PIT_CHN |
| Lefty Gomez | NYA | 1.09 | 193908110_NYA_OAK |
| Cliff Melton | SFN | 0.91 | 193908100_ATL_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Nels Potter | OAK | -4.11 | 193908110_NYA_OAK |
| Vern Kennedy | BAL | -3.85 | 193908120_BAL_DET |
| Hugh Mulcahy | PHI | -1.69 | 193908120_PHI_SFN |
| Elden Auker | BOS | -1.49 | 193908120_MIN_BOS |
| Max Butcher | PIT | -1.15 | 193908110_PIT_CHN |
Based on accumulated WAA for this season up to 1939-08-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.96 | Bucky Walters | 218.3 | CIN |
| +003+ | 7 | Red Ruffing | 169 | NYA |
| +009+ | 5.96 | Bob Feller | 192.3 | CLE |
| +011+ | 5.5 | Lou Fette | 126.7 | ATL |
| +013+ | 5.09 | Paul Derringer | 197 | CIN |
| +014+ | 4.91 | Lefty Grove | 138 | BOS |
| +017+ | 4.64 | Bump Hadley | 109 | NYA |
| +019+ | 4.45 | Hugh Casey | 129.3 | LAN |
| +020+ | 4.36 | Tommy Bridges | 157.7 | DET |
| +021+ | 4.07 | Mort Cooper | 131 | SLN |
| +023+ | 4.01 | Ted Lyons | 125 | CHA |
| +024+ | 3.94 | Atley Donald | 122.7 | NYA |
| +026+ | 3.82 | Curt Davis | 172 | SLN |
| +028+ | 3.75 | Carl Hubbell | 86 | SFN |
| +032+ | 3.6 | Mace Brown | 131 | PIT |
| +033+ | 3.54 | Bob Klinger | 163 | PIT |
| +034+ | 3.49 | Whitey Moore | 139.3 | CIN |
| +037+ | 3.34 | Milt Shoffner | 130.3 | ATL |
| +040+ | 3.07 | Dutch Leonard | 177.3 | MIN |
| +039+ | 3.07 | Bill Lohrman | 126.7 | SFN |
| +043+ | 3.01 | Claude Passeau | 177 | TOT |
| +046+ | 2.76 | Bob Bowman | 103.7 | SLN |
| +049+ | 2.72 | Bobo Newsom | 203.3 | TOT |
| +057+ | 2.34 | Bill Lee | 196.7 | CHN |
| +058+ | 2.31 | Lon Warneke | 134.3 | SLN |
_