| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Stewart | BAL | 4.6 | 193105150_MIN_BAL |
| Wes Ferrell | CLE | 3.89 | 193105130_MIN_CLE |
| George Earnshaw | OAK | 2.75 | 193105130_OAK_CHA |
| Milt Gaston | BOS | 1.47 | 193105130_BOS_DET |
| Firpo Marberry | MIN | 1.36 | 193105150_MIN_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Benge | PHI | -1.71 | 193105152_CIN_PHI |
| Larry French | PIT | -0.31 | 193105150_PIT_SFN |
| Vic Frazier | CHA | -0.29 | 193105140_OAK_CHA |
| Ed Durham | BOS | -0.27 | 193105140_BOS_DET |
| Herb Pennock | NYA | -0.14 | 193105150_NYA_DET |
Based on accumulated WAA for this season up to 1931-05-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.96 | Freddie Fitzsimmons | 50 | SFN |
| +002+ | 2.7 | Lloyd Brown | 62.7 | MIN |
| +004+ | 2.49 | Socks Seibold | 44 | ATL |
| +009+ | 2.13 | Rube Walberg | 56.3 | OAK |
| +011+ | 2.05 | Burleigh Grimes | 39 | SLN |
| +013+ | 1.95 | Ed Brandt | 45 | ATL |
| +015+ | 1.7 | Wilcy Moore | 38.3 | BOS |
| +017+ | 1.57 | Eddie Rommel | 28 | OAK |
| +018+ | 1.56 | Clarence Mitchell | 46 | SFN |
| +023+ | 1.4 | Earl Whitehill | 58 | DET |
| +025+ | 1.33 | Bill Walker | 34 | SFN |
| +027+ | 1.32 | Lefty Grove | 32 | OAK |
| +028+ | 1.29 | Charlie Root | 43 | CHN |
| XXXXX | 1.18 | Ray Kremer | 42 | PIT |
| XXXXX | 1.17 | Clint Brown | 48 | CLE |
| XXXXX | 1.12 | Jesse Haines | 24 | SLN |
| XXXXX | 1.06 | Tom Zachary | 33.3 | ATL |
| XXXXX | 1.06 | Heinie Meine | 52 | PIT |
| XXXXX | 1.05 | Phil Collins | 30.7 | PHI |
| XXXXX | 1.04 | Ed Morris | 22.3 | BOS |
| XXXXX | 1 | Syl Johnson | 25 | SLN |
| XXXXX | 0.94 | Ed Baecht | 12.3 | CHN |
| XXXXX | 0.84 | Pat Caraway | 49.3 | CHA |
| XXXXX | 0.83 | Red Lucas | 53 | CIN |
| XXXXX | 0.77 | Pat Malone | 30.7 | CHN |
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