| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | 6.11 | 193908090_NYA_MIN |
| Lou Fette | ATL | 5.21 | 193908091_ATL_SFN |
| Paul Derringer | CIN | 2.84 | 193908100_CIN_CHN |
| Bill Lohrman | SFN | 1.25 | 193908091_ATL_SFN |
| Russ Bauers | PIT | 0.91 | 193908090_PIT_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Buck Ross | OAK | -5.05 | 193908091_OAK_BOS |
| Bob Harris | BAL | -1.3 | 193908110_BAL_DET |
| Max Butcher | PIT | -1.15 | 193908110_PIT_CHN |
| Kirby Higbe | PHI | -0.67 | 193908110_PHI_SFN |
| Jack Wilson | BOS | -0.44 | 193908100_OAK_BOS |
Based on accumulated WAA for this season up to 1939-08-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 9.21 | Bucky Walters | 209.3 | CIN |
| +003+ | 6.95 | Red Ruffing | 169 | NYA |
| +010+ | 5.91 | Bob Feller | 192.3 | CLE |
| +011+ | 5.45 | Lou Fette | 126.7 | ATL |
| +013+ | 5.03 | Paul Derringer | 197 | CIN |
| +015+ | 4.87 | Lefty Grove | 138 | BOS |
| +017+ | 4.61 | Bump Hadley | 109 | NYA |
| +019+ | 4.41 | Hugh Casey | 129.3 | LAN |
| +020+ | 4.32 | Tommy Bridges | 157.7 | DET |
| +022+ | 4.03 | Mort Cooper | 131 | SLN |
| +023+ | 3.96 | Ted Lyons | 125 | CHA |
| +025+ | 3.91 | Atley Donald | 122.7 | NYA |
| +027+ | 3.78 | Curt Davis | 172 | SLN |
| +029+ | 3.73 | Carl Hubbell | 86 | SFN |
| +031+ | 3.64 | Mace Brown | 123.7 | PIT |
| +033+ | 3.47 | Bob Klinger | 163 | PIT |
| +034+ | 3.46 | Whitey Moore | 139.3 | CIN |
| +035+ | 3.39 | Milt Shoffner | 125 | ATL |
| +039+ | 3.04 | Bill Lohrman | 126.7 | SFN |
| +040+ | 3 | Dutch Leonard | 177.3 | MIN |
| +041+ | 2.98 | Bill Posedel | 154.7 | ATL |
| +045+ | 2.86 | Claude Passeau | 176 | TOT |
| +048+ | 2.74 | Lon Warneke | 130.7 | SLN |
| +049+ | 2.73 | Bob Bowman | 103.7 | SLN |
| +051+ | 2.66 | Bobo Newsom | 203.3 | TOT |
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