| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 16.49 | 193107170_DET_OAK |
| Freddie Fitzsimmons | SFN | 6.38 | 193107170_SFN_CHN |
| Dazzy Vance | LAN | 3.05 | 193107180_LAN_CHN |
| Lloyd Brown | MIN | 1.61 | 193107190_DET_MIN |
| Ray Kremer | PIT | 1.52 | 193107170_PHI_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| 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 |
| Vic Frazier | CHA | -0.83 | 193107170_CHA_MIN |
Based on accumulated WAA for this season up to 1931-07-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 8.8 | Lefty Grove | 178 | OAK |
| +013+ | 4.33 | Freddie Fitzsimmons | 149.7 | SFN |
| +014+ | 4.27 | Ed Brandt | 141.7 | ATL |
| +015+ | 4.19 | Lloyd Brown | 166.7 | MIN |
| +017+ | 4.02 | Watty Clark | 119.7 | LAN |
| +018+ | 3.91 | Tom Zachary | 116.7 | ATL |
| +019+ | 3.86 | Ray Benge | 150.7 | PHI |
| +020+ | 3.81 | Bill Walker | 119 | SFN |
| +022+ | 3.54 | Carl Hubbell | 129 | SFN |
| +024+ | 3.45 | Heinie Meine | 158 | PIT |
| +025+ | 3.43 | Dazzy Vance | 128.7 | LAN |
| +027+ | 3.43 | Ray Kremer | 151.3 | PIT |
| +026+ | 3.43 | Bill Hallahan | 138.7 | SLN |
| +028+ | 3.31 | Si Johnson | 159 | CIN |
| +032+ | 2.85 | Charlie Root | 134.3 | CHN |
| +033+ | 2.62 | George Earnshaw | 190 | OAK |
| +038+ | 2.34 | Jack Ogden | 60.3 | CIN |
| +040+ | 2.24 | Rube Walberg | 175.3 | OAK |
| +044+ | 2.08 | Bob Smith | 135 | CHN |
| +048+ | 1.98 | Lefty Gomez | 119.7 | NYA |
| +051+ | 1.91 | Jack Berly | 85 | SFN |
| +059+ | 1.72 | Bump Hadley | 95.7 | MIN |
| +060+ | 1.7 | Sam Jones | 97.7 | MIN |
| +062+ | 1.66 | Red Lucas | 132.3 | CIN |
| +063+ | 1.66 | Bruce Cunningham | 87.3 | ATL |
_