| Starter | Tm | Tier | Game |
|---|---|---|---|
| Clise Dudley | PHI | -1.99 | 193105240_PHI_LAN |
| Les Sweetland | CHN | -1.69 | 193105250_PIT_CHN |
| Dick Coffman | BAL | -1.54 | 193105242_DET_BAL |
| Hank Johnson | NYA | -0.89 | 193105251_NYA_OAK |
| Roy Mahaffey | OAK | -0.75 | 193105252_NYA_OAK |
Based on accumulated WAA for this season up to 1931-05-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.41 | Ed Brandt | 60.3 | ATL |
| +004+ | 3.2 | Pat Caraway | 76.3 | CHA |
| +006+ | 3.01 | Burleigh Grimes | 56 | SLN |
| +007+ | 2.97 | Lefty Grove | 61.3 | OAK |
| +008+ | 2.95 | Freddie Fitzsimmons | 63 | SFN |
| +014+ | 2.35 | Lloyd Brown | 77 | MIN |
| +016+ | 2.34 | Bill Walker | 43 | SFN |
| +019+ | 2.08 | Jack Berly | 29 | SFN |
| +022+ | 1.99 | Red Lucas | 63 | CIN |
| +023+ | 1.97 | Rube Walberg | 75 | OAK |
| +024+ | 1.96 | Socks Seibold | 52 | ATL |
| +025+ | 1.85 | Tom Zachary | 42.3 | ATL |
| +027+ | 1.57 | Eddie Rommel | 29.3 | OAK |
| +028+ | 1.5 | Heinie Meine | 67 | PIT |
| +029+ | 1.48 | Earl Whitehill | 69 | DET |
| +030+ | 1.47 | Sam Jones | 51 | MIN |
| XXXXX | 1.19 | Jesse Haines | 39 | SLN |
| XXXXX | 1.15 | Ed Morris | 22.3 | BOS |
| XXXXX | 1.09 | Ray Benge | 57 | PHI |
| XXXXX | 1.08 | Syl Johnson | 29 | SLN |
| XXXXX | 1.06 | Dazzy Vance | 43 | LAN |
| XXXXX | 1.06 | Clarence Mitchell | 54 | SFN |
| XXXXX | 1.02 | Clyde Day | 23.3 | LAN |
| XXXXX | 1.02 | Wilcy Moore | 42.3 | BOS |
| XXXXX | 1 | Bill Hallahan | 37 | SLN |
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