| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Benge | PHI | -2.02 | 193105221_LAN_PHI |
| Dick Coffman | BAL | -1.54 | 193105242_DET_BAL |
| Ed Durham | BOS | -0.52 | 193105230_BOS_OAK |
| Tommy Bridges | DET | -0.51 | 193105242_DET_BAL |
| Heinie Meine | PIT | -0.33 | 193105230_PIT_CHN |
Based on accumulated WAA for this season up to 1931-05-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 3.37 | Ed Brandt | 60.3 | ATL |
| +005+ | 3.13 | Pat Caraway | 76.3 | CHA |
| +006+ | 2.98 | Burleigh Grimes | 56 | SLN |
| +007+ | 2.91 | Freddie Fitzsimmons | 63 | SFN |
| +011+ | 2.49 | Lefty Grove | 52.3 | OAK |
| +013+ | 2.32 | Bill Walker | 43 | SFN |
| +014+ | 2.31 | Lloyd Brown | 77 | MIN |
| +018+ | 2.07 | Jack Berly | 29 | SFN |
| +020+ | 1.95 | Red Lucas | 63 | CIN |
| +022+ | 1.93 | Socks Seibold | 52 | ATL |
| +021+ | 1.93 | Rube Walberg | 75 | OAK |
| +026+ | 1.82 | Tom Zachary | 42.3 | ATL |
| +028+ | 1.55 | Eddie Rommel | 29.3 | OAK |
| +032+ | 1.44 | Earl Whitehill | 69 | DET |
| +031+ | 1.44 | Sam Jones | 51 | MIN |
| +030+ | 1.44 | Heinie Meine | 67 | PIT |
| XXXXX | 1.16 | Jesse Haines | 39 | SLN |
| XXXXX | 1.14 | Ed Morris | 22.3 | BOS |
| XXXXX | 1.06 | Ray Benge | 57 | PHI |
| XXXXX | 1.06 | Syl Johnson | 29 | SLN |
| XXXXX | 1.03 | Clarence Mitchell | 54 | SFN |
| XXXXX | 1.03 | Dazzy Vance | 43 | LAN |
| XXXXX | 1.01 | Clyde Day | 23.3 | LAN |
| XXXXX | 0.99 | Wilcy Moore | 42.3 | BOS |
| XXXXX | 0.97 | Bill Hallahan | 37 | SLN |
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