| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 6.05 | 193908120_CIN_SLN |
| Red Ruffing | NYA | 5.7 | 193908132_NYA_OAK |
| Bob Feller | CLE | 3.62 | 193908131_CHA_CLE |
| Carl Hubbell | SFN | 2.39 | 193908132_PHI_SFN |
| Bob Klinger | PIT | 1.79 | 193908130_PIT_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Buck Ross | OAK | -5.34 | 193908131_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 |
| Joe Haynes | MIN | -1.32 | 193908131_MIN_BOS |
Based on accumulated WAA for this season up to 1939-08-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.04 | Bucky Walters | 218.3 | CIN |
| +003+ | 7.87 | Red Ruffing | 177 | NYA |
| +005+ | 6.9 | Bob Feller | 201.3 | CLE |
| +011+ | 5.52 | Lou Fette | 126.7 | ATL |
| +014+ | 4.94 | Lefty Grove | 138 | BOS |
| +016+ | 4.76 | Mort Cooper | 139.7 | SLN |
| +018+ | 4.52 | Paul Derringer | 201 | CIN |
| +019+ | 4.34 | Curt Davis | 181 | SLN |
| +020+ | 4.26 | Carl Hubbell | 95 | SFN |
| +021+ | 4.25 | Bump Hadley | 109 | NYA |
| +023+ | 4.09 | Ted Lyons | 129.7 | CHA |
| +029+ | 3.77 | Tommy Bridges | 158 | DET |
| +030+ | 3.59 | Bill Lohrman | 135.7 | SFN |
| +031+ | 3.54 | Hugh Casey | 132.7 | LAN |
| +033+ | 3.47 | Mace Brown | 131.3 | PIT |
| +034+ | 3.46 | Bob Klinger | 170 | PIT |
| +035+ | 3.41 | Whitey Moore | 146.3 | CIN |
| +036+ | 3.37 | Milt Shoffner | 130.3 | ATL |
| +040+ | 3.13 | Dutch Leonard | 177.3 | MIN |
| +041+ | 3.09 | Atley Donald | 126.3 | NYA |
| +043+ | 3.05 | Claude Passeau | 177 | TOT |
| +049+ | 2.78 | Bob Bowman | 103.7 | SLN |
| +051+ | 2.73 | Bobo Newsom | 203.3 | TOT |
| +055+ | 2.52 | Dizzy Dean | 84.3 | CHN |
| +059+ | 2.38 | Bill Lee | 196.7 | CHN |
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