| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 15.75 | 193107010_OAK_CLE |
| Bill Walker | SFN | 4.89 | 193107010_SLN_SFN |
| George Uhle | DET | 3.09 | 193107020_NYA_DET |
| Lefty Stewart | BAL | 1.51 | 193107020_MIN_BAL |
| Wes Ferrell | CLE | 1.39 | 193107010_OAK_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ownie Carroll | CIN | -4.76 | 193107010_CIN_LAN |
| Sam Gray | BAL | -1.81 | 193107010_MIN_BAL |
| Les Sweetland | CHN | -1.62 | 193107010_CHN_PHI |
| Stew Bolen | PHI | -1.27 | 193107031_SLN_PHI |
| Art Herring | DET | -0.59 | 193107010_NYA_DET |
Based on accumulated WAA for this season up to 1931-07-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.34 | Lefty Grove | 145 | OAK |
| +010+ | 4.38 | Lloyd Brown | 134 | MIN |
| +012+ | 4.25 | Freddie Fitzsimmons | 127.7 | SFN |
| +014+ | 3.54 | Ray Benge | 119.7 | PHI |
| +015+ | 3.53 | Tom Zachary | 100.7 | ATL |
| +016+ | 3.46 | Bill Hallahan | 111.3 | SLN |
| +019+ | 3.32 | Ed Brandt | 115.7 | ATL |
| +021+ | 3.13 | Bill Walker | 94.7 | SFN |
| +023+ | 3.01 | Si Johnson | 133.7 | CIN |
| +024+ | 2.95 | Bob Smith | 119.3 | CHN |
| +025+ | 2.72 | Heinie Meine | 130.7 | PIT |
| +027+ | 2.52 | Carl Hubbell | 97 | SFN |
| +030+ | 2.36 | Watty Clark | 92.7 | LAN |
| +031+ | 2.29 | George Earnshaw | 147 | OAK |
| +035+ | 2.19 | Ray Kremer | 112.7 | PIT |
| +037+ | 2.12 | George Uhle | 101.3 | DET |
| +039+ | 1.96 | Frank Watt | 50 | PHI |
| +040+ | 1.92 | Wilcy Moore | 76.7 | BOS |
| +041+ | 1.88 | Rube Walberg | 145 | OAK |
| +042+ | 1.85 | Dazzy Vance | 96 | LAN |
| +043+ | 1.82 | Socks Seibold | 109 | ATL |
| +044+ | 1.79 | Jack Berly | 68 | SFN |
| +049+ | 1.76 | Bump Hadley | 72.3 | MIN |
| +054+ | 1.7 | Clarence Mitchell | 108 | SFN |
| +057+ | 1.58 | Ed Morris | 69 | BOS |
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