| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 5.33 | 193105120_OAK_CHA |
| Wes Ferrell | CLE | 3.89 | 193105130_MIN_CLE |
| Milt Gaston | BOS | 1.47 | 193105130_BOS_DET |
| Lloyd Brown | MIN | 0.99 | 193105130_MIN_CLE |
| Pat Caraway | CHA | 0.71 | 193105120_OAK_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bruce Cunningham | ATL | -0.36 | 193105122_CIN_ATL |
| Vic Frazier | CHA | -0.29 | 193105140_OAK_CHA |
| Jack Russell | BOS | -0.27 | 193105120_BOS_DET |
| Larry Benton | CIN | -0.25 | 193105121_CIN_ATL |
| Vic Sorrell | DET | -0.11 | 193105120_BOS_DET |
Based on accumulated WAA for this season up to 1931-05-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.97 | Freddie Fitzsimmons | 50 | SFN |
| +003+ | 2.68 | Lloyd Brown | 62.7 | MIN |
| +004+ | 2.49 | Socks Seibold | 44 | ATL |
| +007+ | 2.12 | Rube Walberg | 56.3 | OAK |
| +008+ | 2.05 | Burleigh Grimes | 39 | SLN |
| +010+ | 1.95 | Ed Brandt | 45 | ATL |
| +016+ | 1.48 | Wilcy Moore | 36 | BOS |
| +018+ | 1.39 | Earl Whitehill | 58 | DET |
| +019+ | 1.34 | Bill Walker | 34 | SFN |
| +025+ | 1.31 | Lefty Grove | 32 | OAK |
| +027+ | 1.26 | Charlie Root | 43 | CHN |
| +026+ | 1.26 | Lefty Stewart | 38.3 | BAL |
| XXXXX | 1.2 | Ray Kremer | 42 | PIT |
| XXXXX | 1.12 | Jesse Haines | 24 | SLN |
| XXXXX | 1.1 | Clarence Mitchell | 36 | SFN |
| XXXXX | 1.08 | Heinie Meine | 52 | PIT |
| XXXXX | 1.06 | Tom Zachary | 33.3 | ATL |
| XXXXX | 1.04 | Phil Collins | 30.7 | PHI |
| XXXXX | 1.04 | Ed Morris | 22.3 | BOS |
| XXXXX | 1.03 | Red Lucas | 44 | CIN |
| XXXXX | 1 | Syl Johnson | 25 | SLN |
| XXXXX | 0.98 | Ray Phelps | 36.3 | LAN |
| XXXXX | 0.97 | Ray Benge | 39.3 | PHI |
| XXXXX | 0.9 | Ed Baecht | 12 | CHN |
| XXXXX | 0.83 | Pat Caraway | 49.3 | CHA |
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