| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 7.97 | 193105251_NYA_OAK |
| Burleigh Grimes | SLN | 7.45 | 193105241_SLN_CIN |
| Bill Walker | SFN | 6.72 | 193105262_ATL_SFN |
| Lefty Stewart | BAL | 3.37 | 193105241_DET_BAL |
| Charlie Root | CHN | 2.36 | 193105240_PIT_CHN |
| 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 1931-05-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.4 | Ed Brandt | 60.3 | ATL |
| +005+ | 3.16 | Bill Walker | 52 | SFN |
| +006+ | 3.15 | Pat Caraway | 76.3 | CHA |
| +007+ | 2.98 | Burleigh Grimes | 56 | SLN |
| +009+ | 2.93 | Lefty Grove | 61.3 | OAK |
| +010+ | 2.92 | Freddie Fitzsimmons | 63 | SFN |
| +017+ | 2.34 | Lloyd Brown | 77 | MIN |
| +020+ | 2.07 | Jack Berly | 29 | SFN |
| +022+ | 1.95 | Socks Seibold | 52 | ATL |
| +023+ | 1.94 | Red Lucas | 63 | CIN |
| +024+ | 1.92 | Rube Walberg | 75 | OAK |
| +026+ | 1.72 | Tom Zachary | 45.3 | ATL |
| +030+ | 1.48 | Heinie Meine | 67 | PIT |
| +032+ | 1.43 | Earl Whitehill | 69 | DET |
| XXXXX | 1.16 | Jesse Haines | 39 | SLN |
| XXXXX | 1.13 | Ed Morris | 22.3 | BOS |
| XXXXX | 1.11 | Eddie Rommel | 31.3 | OAK |
| XXXXX | 1.08 | George Uhle | 39.3 | DET |
| 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 | 1.02 | Bruce Cunningham | 25.3 | ATL |
| XXXXX | 0.99 | Clyde Day | 25.3 | LAN |
| XXXXX | 0.99 | Wilcy Moore | 42.3 | BOS |
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