| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 7.97 | 193105251_NYA_OAK |
| Bill Walker | SFN | 6.72 | 193105262_ATL_SFN |
| Tom Zachary | ATL | 2.15 | 193105261_ATL_SFN |
| Pat Caraway | CHA | 2.1 | 193105272_DET_CHA |
| George Uhle | DET | 1.17 | 193105260_DET_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Les Sweetland | CHN | -1.69 | 193105250_PIT_CHN |
| Biff Wysong | CIN | -1.12 | 193105270_CHN_CIN |
| Hank Johnson | NYA | -0.89 | 193105251_NYA_OAK |
| Roy Mahaffey | OAK | -0.75 | 193105252_NYA_OAK |
| Vic Frazier | CHA | -0.51 | 193105271_DET_CHA |
Based on accumulated WAA for this season up to 1931-05-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.83 | Pat Caraway | 85.3 | CHA |
| +003+ | 3.44 | Ed Brandt | 60.3 | ATL |
| +007+ | 3.18 | Bill Walker | 52 | SFN |
| +010+ | 3 | Burleigh Grimes | 56 | SLN |
| +011+ | 2.95 | Lefty Grove | 61.3 | OAK |
| +012+ | 2.94 | Freddie Fitzsimmons | 63 | SFN |
| +015+ | 2.57 | Lloyd Brown | 86 | MIN |
| +018+ | 2.37 | Heinie Meine | 76 | PIT |
| +021+ | 1.96 | Red Lucas | 63 | CIN |
| +022+ | 1.95 | Rube Walberg | 75 | OAK |
| +023+ | 1.89 | Jack Berly | 36 | SFN |
| +026+ | 1.75 | Tom Zachary | 45.3 | ATL |
| +031+ | 1.41 | Earl Whitehill | 77 | DET |
| +032+ | 1.39 | Wilcy Moore | 46.3 | BOS |
| XXXXX | 1.22 | Socks Seibold | 57 | ATL |
| XXXXX | 1.18 | Jesse Haines | 39 | SLN |
| XXXXX | 1.12 | Eddie Rommel | 31.3 | OAK |
| XXXXX | 1.1 | Syl Johnson | 36 | SLN |
| XXXXX | 1.1 | George Uhle | 39.3 | DET |
| XXXXX | 1.08 | Ray Benge | 57 | PHI |
| XXXXX | 1.05 | Clarence Mitchell | 54 | SFN |
| XXXXX | 1.04 | Dazzy Vance | 43 | LAN |
| XXXXX | 1.03 | Bruce Cunningham | 25.3 | ATL |
| XXXXX | 1 | Ed Morris | 27.3 | BOS |
| XXXXX | 1 | Clyde Day | 25.3 | LAN |
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