| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sid Hudson | MIN | -5.68 | 194006290_MIN_BOS |
| Vern Kennedy | BAL | -5.15 | 194006292_DET_BAL |
| Max Butcher | PIT | -1.67 | 194006302_SLN_PIT |
| Lefty Smoll | PHI | -1.3 | 194006302_SFN_PHI |
| Buck Ross | OAK | -1.24 | 194006280_OAK_NYA |
Based on accumulated WAA for this season up to 1940-06-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.2 | Bob Feller | 136.7 | CLE |
| +003+ | 4.61 | Bucky Walters | 136 | CIN |
| +005+ | 4.02 | Al Smith | 84.7 | CLE |
| +006+ | 4.01 | Hugh Mulcahy | 122.7 | PHI |
| +008+ | 3.83 | Al Milnar | 118.7 | CLE |
| +009+ | 3.76 | Claude Passeau | 125.7 | CHN |
| +011+ | 3.7 | Paul Derringer | 133 | CIN |
| +012+ | 3.69 | Bobo Newsom | 115.7 | DET |
| +018+ | 2.71 | Jake Mooty | 45.3 | CHN |
| +021+ | 2.63 | Dutch Leonard | 129.7 | MIN |
| +023+ | 2.51 | Vito Tamulis | 59 | LAN |
| +024+ | 2.5 | Hal Schumacher | 79 | SFN |
| +025+ | 2.38 | Dick Errickson | 80.3 | ATL |
| +026+ | 2.34 | Johnny Allen | 72 | CLE |
| +027+ | 2.3 | Jim Turner | 78 | CIN |
| +031+ | 2.22 | Johnny Gorsica | 61.7 | DET |
| +032+ | 2.2 | Marius Russo | 67 | NYA |
| +035+ | 2.13 | Mace Brown | 84.3 | PIT |
| +034+ | 2.13 | Red Ruffing | 104.7 | NYA |
| +037+ | 2.05 | Bill Lohrman | 72.3 | SFN |
| +039+ | 1.99 | Vern Olsen | 59.7 | CHN |
| +041+ | 1.97 | Larry French | 113.7 | CHN |
| +043+ | 1.89 | Lon Warneke | 76.3 | SLN |
| +044+ | 1.83 | Monte Pearson | 86.7 | NYA |
| +046+ | 1.75 | Ken Raffensberger | 42 | CHN |
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