| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | 7.55 | 193908232_NYA_CHA |
| Lefty Grove | BOS | 3.36 | 193908250_BOS_CHA |
| Paul Derringer | CIN | 2.13 | 193908230_CIN_PHI |
| Mort Cooper | SLN | 1.64 | 193908230_SLN_LAN |
| Danny MacFayden | ATL | 1.13 | 193908232_PIT_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Mills | BAL | -4.63 | 193908240_NYA_BAL |
| Buck Ross | OAK | -4.13 | 193908241_OAK_CLE |
| Joe Haynes | MIN | -2.1 | 193908250_MIN_DET |
| Elden Auker | BOS | -0.94 | 193908240_BOS_CHA |
| Al Hollingsworth | LAN | -0.68 | 193908230_SLN_LAN |
Based on accumulated WAA for this season up to 1939-08-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.23 | Bucky Walters | 235 | CIN |
| +003+ | 9 | Red Ruffing | 195 | NYA |
| +006+ | 7.51 | Bob Feller | 220.3 | CLE |
| +010+ | 6.15 | Lefty Grove | 153 | BOS |
| +015+ | 5.29 | Paul Derringer | 219 | CIN |
| +016+ | 5.2 | Lou Fette | 136 | ATL |
| +017+ | 4.78 | Carl Hubbell | 103 | SFN |
| +022+ | 4.33 | Claude Passeau | 204 | TOT |
| +024+ | 4.25 | Bob Bowman | 120.3 | SLN |
| +027+ | 4.09 | Steve Sundra | 82 | NYA |
| +030+ | 3.95 | Curt Davis | 195 | SLN |
| +029+ | 3.95 | Mace Brown | 147.3 | PIT |
| +031+ | 3.93 | Mort Cooper | 150.7 | SLN |
| +034+ | 3.85 | Ted Lyons | 129.7 | CHA |
| +037+ | 3.78 | Hugh Casey | 150 | LAN |
| +039+ | 3.6 | Dutch Leonard | 200.3 | MIN |
| +040+ | 3.58 | Tommy Bridges | 173 | DET |
| +041+ | 3.51 | Atley Donald | 138.7 | NYA |
| +042+ | 3.43 | Bill Lohrman | 147.7 | SFN |
| +043+ | 3.34 | Milt Shoffner | 142.7 | TOT |
| +051+ | 2.98 | Bill Posedel | 175.3 | ATL |
| +053+ | 2.79 | Cliff Melton | 151.7 | SFN |
| +054+ | 2.78 | Bob Klinger | 181 | PIT |
| +055+ | 2.76 | Whitey Moore | 151 | CIN |
| +056+ | 2.75 | Bobo Newsom | 229.3 | TOT |
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