| Starter | Tm | Tier | Game |
|---|---|---|---|
| George Caster | OAK | -2.06 | 194006260_OAK_BAL |
| Bob Harris | BAL | -1.44 | 194006270_DET_BAL |
| Walt Masterson | MIN | -0.63 | 194006260_MIN_CHA |
| Joe Bowman | PIT | -0.53 | 194006261_PIT_PHI |
| Jim Bagby | BOS | -0.51 | 194006260_BOS_DET |
Based on accumulated WAA for this season up to 1940-06-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.7 | Bob Feller | 127.7 | CLE |
| +002+ | 4.57 | Bucky Walters | 127 | CIN |
| +004+ | 4.04 | Al Smith | 76.7 | CLE |
| +006+ | 4 | Hugh Mulcahy | 122.7 | PHI |
| +007+ | 3.85 | Bobo Newsom | 115.7 | DET |
| +008+ | 3.75 | Claude Passeau | 117.7 | CHN |
| +009+ | 3.66 | Paul Derringer | 133 | CIN |
| +012+ | 3.43 | Al Milnar | 110.7 | CLE |
| +017+ | 2.66 | Jake Mooty | 43 | CHN |
| +018+ | 2.58 | Dutch Leonard | 129.7 | MIN |
| +020+ | 2.47 | Hal Schumacher | 79 | SFN |
| +024+ | 2.37 | Larry French | 107.7 | CHN |
| +025+ | 2.34 | Dick Errickson | 80.3 | ATL |
| +028+ | 2.28 | Junior Thompson | 109.3 | CIN |
| +029+ | 2.26 | Paul Dean | 36 | SFN |
| +030+ | 2.22 | Johnny Allen | 71 | CLE |
| +032+ | 2.21 | Marius Russo | 67 | NYA |
| +034+ | 2.14 | Red Ruffing | 104.7 | NYA |
| +035+ | 2.02 | Mace Brown | 83.3 | PIT |
| +036+ | 1.97 | Vern Olsen | 57.7 | CHN |
| +038+ | 1.88 | Vito Tamulis | 52.3 | LAN |
| +039+ | 1.87 | Lon Warneke | 76.3 | SLN |
| +040+ | 1.82 | Johnny Gorsica | 54.7 | DET |
| +041+ | 1.76 | Joe Sullivan | 85 | ATL |
| +044+ | 1.73 | Ken Raffensberger | 42 | CHN |
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