| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Hubbell | SFN | 4.18 | 193106290_SLN_SFN |
| George Earnshaw | OAK | 3.73 | 193106300_OAK_CLE |
| George Uhle | DET | 3.41 | 193106282_OAK_DET |
| Charlie Root | CHN | 3.22 | 193106281_CHN_ATL |
| Tom Zachary | ATL | 2.9 | 193106290_PIT_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Milt Shoffner | CLE | -2.13 | 193106291_NYA_CLE |
| Sam Gray | BAL | -1.87 | 193106281_BOS_BAL |
| Ed Durham | BOS | -1.12 | 193106282_BOS_BAL |
| Vic Frazier | CHA | -1.1 | 193106290_MIN_CHA |
| Phil Collins | PHI | -0.52 | 193106290_CHN_PHI |
Based on accumulated WAA for this season up to 1931-06-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.14 | Lefty Grove | 136 | OAK |
| +009+ | 4.4 | Lloyd Brown | 134 | MIN |
| +013+ | 3.85 | Freddie Fitzsimmons | 118.7 | SFN |
| +014+ | 3.59 | Tom Zachary | 100.7 | ATL |
| +015+ | 3.53 | Bill Hallahan | 105.3 | SLN |
| +017+ | 3.38 | Ed Brandt | 115.7 | ATL |
| +018+ | 3.29 | Si Johnson | 127.7 | CIN |
| +020+ | 3.15 | George Uhle | 96.3 | DET |
| +021+ | 3.1 | Rube Walberg | 139.7 | OAK |
| +025+ | 2.77 | Ray Benge | 108.7 | PHI |
| +026+ | 2.72 | Bill Walker | 85.7 | SFN |
| +027+ | 2.57 | Carl Hubbell | 97 | SFN |
| +030+ | 2.5 | George Earnshaw | 146.3 | OAK |
| +032+ | 2.42 | Watty Clark | 92.7 | LAN |
| +033+ | 2.26 | Ray Kremer | 112.7 | PIT |
| +035+ | 2.16 | Bob Smith | 108.3 | CHN |
| +037+ | 2.01 | Frank Watt | 50 | PHI |
| +038+ | 1.96 | Wilcy Moore | 76.7 | BOS |
| +041+ | 1.9 | Dazzy Vance | 96 | LAN |
| +040+ | 1.9 | Heinie Meine | 121.7 | PIT |
| +045+ | 1.83 | Jack Berly | 68 | SFN |
| +046+ | 1.76 | Clarence Mitchell | 108 | SFN |
| +052+ | 1.61 | Ed Morris | 69 | BOS |
| +054+ | 1.56 | Charlie Root | 102.3 | CHN |
| +056+ | 1.53 | Bump Hadley | 67.7 | MIN |
_