| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 16.12 | 193107080_OAK_MIN |
| Freddie Fitzsimmons | SFN | 4.76 | 193107080_SFN_PHI |
| Charlie Root | CHN | 2.57 | 193107071_SLN_CHN |
| Lloyd Brown | MIN | 2.09 | 193107080_OAK_MIN |
| Bill Hallahan | SLN | 1.52 | 193107071_SLN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Vic Frazier | CHA | -2.71 | 193107060_CHA_BAL |
| Dick Coffman | BAL | -2.43 | 193107060_CHA_BAL |
| Guy Bush | CHN | -1.36 | 193107072_SLN_CHN |
| Stew Bolen | PHI | -1.3 | 193107070_LAN_PHI |
| Chief Hogsett | DET | -0.49 | 193107060_DET_CLE |
Based on accumulated WAA for this season up to 1931-07-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 7.7 | Lefty Grove | 161 | OAK |
| +008+ | 4.67 | Freddie Fitzsimmons | 135.7 | SFN |
| +013+ | 3.52 | Tom Zachary | 100.7 | ATL |
| +016+ | 3.41 | Ray Benge | 126.7 | PHI |
| +017+ | 3.35 | Ed Brandt | 124.7 | ATL |
| +019+ | 3.29 | Bill Hallahan | 123 | SLN |
| +020+ | 3.25 | Watty Clark | 101.7 | LAN |
| +021+ | 3.15 | Bill Walker | 98.7 | SFN |
| +022+ | 3.07 | Heinie Meine | 139.7 | PIT |
| +024+ | 2.95 | George Earnshaw | 164 | OAK |
| +025+ | 2.92 | Lloyd Brown | 144 | MIN |
| +027+ | 2.83 | Charlie Root | 120.3 | CHN |
| +029+ | 2.74 | Dazzy Vance | 105 | LAN |
| +031+ | 2.56 | Bob Smith | 128.3 | CHN |
| +033+ | 2.51 | Carl Hubbell | 105 | SFN |
| +034+ | 2.47 | Bump Hadley | 84.7 | MIN |
| +035+ | 2.45 | Rube Walberg | 152.3 | OAK |
| +037+ | 2.4 | Ray Kremer | 124.3 | PIT |
| +038+ | 2.3 | Si Johnson | 135 | CIN |
| +040+ | 2.27 | Frank Watt | 68 | PHI |
| +041+ | 2.16 | George Uhle | 101.3 | DET |
| +046+ | 1.83 | Jack Berly | 68 | SFN |
| +047+ | 1.82 | Socks Seibold | 109 | ATL |
| +049+ | 1.71 | Clarence Mitchell | 114 | SFN |
| +052+ | 1.66 | Jack Ogden | 39.3 | CIN |
_