| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | 6.3 | 193908180_OAK_NYA |
| Bob Feller | CLE | 3.77 | 193908180_CLE_CHA |
| Lefty Grove | BOS | 3.37 | 193908170_BOS_OAK |
| Paul Derringer | CIN | 2.07 | 193908190_SLN_CIN |
| Curt Davis | SLN | 1.69 | 193908170_SLN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Mills | BAL | -4.73 | 193908170_CLE_BAL |
| Joe Haynes | MIN | -2 | 193908191_BOS_MIN |
| Cotton Pippen | OAK | -0.97 | 193908180_OAK_NYA |
| Jake Wade | BOS | -0.75 | 193908192_BOS_MIN |
| Kirby Higbe | PHI | -0.36 | 193908180_SFN_PHI |
Based on accumulated WAA for this season up to 1939-08-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.1 | Bucky Walters | 227.3 | CIN |
| +003+ | 8.58 | Red Ruffing | 186 | NYA |
| +005+ | 7.52 | Bob Feller | 211.3 | CLE |
| +011+ | 5.55 | Lefty Grove | 147 | BOS |
| +013+ | 5.4 | Lou Fette | 135.7 | ATL |
| +016+ | 4.56 | Mort Cooper | 146.7 | SLN |
| +018+ | 4.47 | Curt Davis | 190 | SLN |
| +020+ | 4.4 | Paul Derringer | 210 | CIN |
| +021+ | 4.2 | Carl Hubbell | 95 | SFN |
| +023+ | 4.06 | Hugh Casey | 141.7 | LAN |
| +028+ | 3.91 | Ted Lyons | 129.7 | CHA |
| +029+ | 3.75 | Mace Brown | 139.3 | PIT |
| +030+ | 3.69 | Bump Hadley | 113 | NYA |
| +031+ | 3.67 | Bob Bowman | 114.7 | SLN |
| +033+ | 3.6 | Bob Klinger | 179 | PIT |
| +034+ | 3.59 | Claude Passeau | 186 | TOT |
| +035+ | 3.58 | Tommy Bridges | 164 | DET |
| +041+ | 3.39 | Milt Shoffner | 132.3 | ATL |
| +040+ | 3.39 | Bill Lohrman | 138.7 | SFN |
| +043+ | 3.24 | Whitey Moore | 147.3 | CIN |
| +045+ | 3.07 | Atley Donald | 129.7 | NYA |
| +049+ | 2.92 | Dutch Leonard | 185.3 | MIN |
| +050+ | 2.8 | Bobo Newsom | 212.3 | TOT |
| +054+ | 2.61 | Lefty Gomez | 141.7 | NYA |
| +059+ | 2.48 | Bill Lee | 210 | CHN |
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