| Starter | Tm | Tier | Game |
|---|---|---|---|
| Milt Shoffner | CLE | -2.28 | 193107141_CLE_NYA |
| Phil Collins | PHI | -1.82 | 193107142_PHI_PIT |
| Guy Bush | CHN | -1.79 | 193107140_SFN_CHN |
| Sam Gray | BAL | -1.35 | 193107160_BAL_BOS |
| Art Herring | DET | -1.09 | 193107140_DET_OAK |
Based on accumulated WAA for this season up to 1931-07-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 8.22 | Lefty Grove | 169 | OAK |
| +009+ | 5.12 | Freddie Fitzsimmons | 144.7 | SFN |
| +012+ | 4.28 | Ed Brandt | 141.7 | ATL |
| +016+ | 4.09 | Watty Clark | 119.7 | LAN |
| +017+ | 3.92 | Tom Zachary | 116.7 | ATL |
| +018+ | 3.82 | Ray Benge | 143.7 | PHI |
| +021+ | 3.48 | Bill Hallahan | 138.7 | SLN |
| +022+ | 3.43 | Ray Kremer | 142.3 | PIT |
| +023+ | 3.37 | Lloyd Brown | 157.7 | MIN |
| +025+ | 3.24 | Heinie Meine | 149 | PIT |
| +026+ | 3.19 | Carl Hubbell | 121 | SFN |
| +027+ | 3.1 | Si Johnson | 152 | CIN |
| +028+ | 2.94 | Bill Walker | 110 | SFN |
| +029+ | 2.93 | Charlie Root | 134.3 | CHN |
| +030+ | 2.93 | Dazzy Vance | 120.7 | LAN |
| +031+ | 2.89 | George Earnshaw | 181 | OAK |
| +033+ | 2.81 | Jack Ogden | 54.3 | CIN |
| +041+ | 2.23 | Socks Seibold | 123 | ATL |
| +048+ | 1.92 | George Uhle | 110.3 | DET |
| +049+ | 1.91 | Fred Frankhouse | 70.7 | ATL |
| +051+ | 1.87 | Rube Walberg | 166.3 | OAK |
| +059+ | 1.66 | Bruce Cunningham | 87.3 | ATL |
| +062+ | 1.65 | Ed Wells | 64.3 | NYA |
| +063+ | 1.62 | Firpo Marberry | 98.7 | MIN |
| +065+ | 1.56 | Clarence Mitchell | 130 | SFN |
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