| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Hubbell | SFN | 4.82 | 193107191_SFN_SLN |
| Watty Clark | LAN | 3.94 | 193107200_LAN_CHN |
| Charlie Root | CHN | 2.64 | 193107200_LAN_CHN |
| Lloyd Brown | MIN | 1.61 | 193107190_DET_MIN |
| Wes Ferrell | CLE | 1.22 | 193107210_CLE_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Vic Frazier | CHA | -1.87 | 193107210_CHA_OAK |
| Phil Collins | PHI | -1.61 | 193107192_PHI_CIN |
| Jack Russell | BOS | -1.14 | 193107190_CLE_BOS |
| Paul Derringer | SLN | -1.02 | 193107192_SFN_SLN |
| Art Herring | DET | -0.93 | 193107190_DET_MIN |
Based on accumulated WAA for this season up to 1931-07-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 8.76 | Lefty Grove | 178 | OAK |
| +012+ | 4.58 | Watty Clark | 127.7 | LAN |
| +013+ | 4.24 | Ed Brandt | 141.7 | ATL |
| +016+ | 4.17 | Lloyd Brown | 166.7 | MIN |
| +017+ | 3.89 | Tom Zachary | 116.7 | ATL |
| +018+ | 3.83 | Ray Benge | 150.7 | PHI |
| +019+ | 3.71 | Charlie Root | 143.3 | CHN |
| +022+ | 3.63 | Freddie Fitzsimmons | 153.3 | SFN |
| +023+ | 3.57 | Bill Hallahan | 140.3 | SLN |
| +024+ | 3.53 | Carl Hubbell | 129 | SFN |
| +025+ | 3.5 | Bill Walker | 122.3 | SFN |
| +026+ | 3.42 | Dazzy Vance | 128.7 | LAN |
| +027+ | 3.41 | Heinie Meine | 158 | PIT |
| +028+ | 3.4 | Ray Kremer | 151.3 | PIT |
| +030+ | 3.28 | Si Johnson | 159 | CIN |
| +036+ | 2.36 | George Earnshaw | 192 | OAK |
| +037+ | 2.32 | Jack Ogden | 60.3 | CIN |
| +043+ | 2.2 | Rube Walberg | 175.3 | OAK |
| +050+ | 1.95 | Lefty Gomez | 119.7 | NYA |
| +055+ | 1.9 | Bob Smith | 142 | CHN |
| +054+ | 1.9 | Jack Berly | 85 | SFN |
| +059+ | 1.81 | Firpo Marberry | 107.7 | MIN |
| +060+ | 1.75 | Bump Hadley | 98.3 | MIN |
| +063+ | 1.69 | Sam Jones | 97.7 | MIN |
| +066+ | 1.64 | Bruce Cunningham | 87.3 | ATL |
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