| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | 5.7 | 193908132_NYA_OAK |
| Lou Fette | ATL | 4.28 | 193908150_PHI_ATL |
| Bob Feller | CLE | 3.62 | 193908131_CHA_CLE |
| Paul Derringer | CIN | 2.89 | 193908140_PIT_CIN |
| Carl Hubbell | SFN | 2.39 | 193908132_PHI_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Buck Ross | OAK | -5.34 | 193908131_NYA_OAK |
| Jack Kramer | BAL | -1.48 | 193908130_BAL_DET |
| Joe Haynes | MIN | -1.32 | 193908131_MIN_BOS |
| Ray Harrell | PHI | -0.97 | 193908132_PHI_SFN |
| Jack Wilson | BOS | -0.58 | 193908150_BOS_OAK |
Based on accumulated WAA for this season up to 1939-08-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.04 | Bucky Walters | 218.3 | CIN |
| +003+ | 7.84 | Red Ruffing | 177 | NYA |
| +005+ | 6.92 | Bob Feller | 201.3 | CLE |
| +011+ | 5.58 | Lou Fette | 135.7 | ATL |
| +013+ | 4.95 | Lefty Grove | 138 | BOS |
| +016+ | 4.74 | Mort Cooper | 139.7 | SLN |
| +018+ | 4.51 | Paul Derringer | 201 | CIN |
| +019+ | 4.32 | Curt Davis | 181 | SLN |
| +020+ | 4.27 | Carl Hubbell | 95 | SFN |
| +021+ | 4.24 | Bump Hadley | 109 | NYA |
| +024+ | 4.09 | Ted Lyons | 129.7 | CHA |
| +029+ | 3.76 | Tommy Bridges | 158 | DET |
| +031+ | 3.6 | Bill Lohrman | 135.7 | SFN |
| +032+ | 3.55 | Hugh Casey | 132.7 | LAN |
| +033+ | 3.48 | Bob Klinger | 170 | PIT |
| +034+ | 3.47 | Mace Brown | 131.3 | PIT |
| +036+ | 3.41 | Whitey Moore | 146.3 | CIN |
| +038+ | 3.37 | Milt Shoffner | 130.3 | ATL |
| +041+ | 3.11 | Dutch Leonard | 177.3 | MIN |
| +042+ | 3.07 | Atley Donald | 126.3 | NYA |
| +043+ | 3.05 | Claude Passeau | 177 | TOT |
| +046+ | 3.01 | Bobo Newsom | 212.3 | TOT |
| +048+ | 2.86 | Bob Bowman | 104.7 | SLN |
| +053+ | 2.75 | Lefty Gomez | 141.7 | NYA |
| +057+ | 2.52 | Dizzy Dean | 84.3 | CHN |
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