| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 16.76 | 193107251_CLE_OAK |
| Freddie Fitzsimmons | SFN | 3.32 | 193107251_SFN_CIN |
| Lloyd Brown | MIN | 2.5 | 193107260_BAL_MIN |
| Ray Kremer | PIT | 2.16 | 193107270_SFN_PIT |
| Dazzy Vance | LAN | 1.67 | 193107262_LAN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ownie Carroll | CIN | -2.99 | 193107251_SFN_CIN |
| Guy Bush | CHN | -2.47 | 193107270_PHI_CHN |
| Pat Caraway | CHA | -2.09 | 193107262_CHA_NYA |
| Tommy Bridges | DET | -1.9 | 193107270_DET_BOS |
| Jack Russell | BOS | -1.66 | 193107262_DET_BOS |
Based on accumulated WAA for this season up to 1931-07-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 9.1 | Lefty Grove | 187 | OAK |
| +011+ | 4.64 | Lloyd Brown | 171.3 | MIN |
| +013+ | 4.59 | Ed Brandt | 151.7 | ATL |
| +014+ | 4.56 | Freddie Fitzsimmons | 162.3 | SFN |
| +015+ | 4.4 | Carl Hubbell | 141.7 | SFN |
| +017+ | 4.36 | Charlie Root | 152.3 | CHN |
| +018+ | 4.22 | Bill Hallahan | 149.3 | SLN |
| +020+ | 4.07 | Ray Benge | 158.7 | PHI |
| +021+ | 3.9 | Tom Zachary | 125.3 | ATL |
| +024+ | 3.83 | Ray Kremer | 167.3 | PIT |
| +025+ | 3.69 | Bill Walker | 130.3 | SFN |
| +026+ | 3.61 | Watty Clark | 134.7 | LAN |
| +028+ | 3.5 | Si Johnson | 170 | CIN |
| +030+ | 3.39 | Dazzy Vance | 141 | LAN |
| +031+ | 3.1 | Heinie Meine | 162 | PIT |
| +033+ | 2.91 | George Earnshaw | 201 | OAK |
| +034+ | 2.79 | Larry French | 178.3 | PIT |
| +035+ | 2.74 | Rube Walberg | 195 | OAK |
| +039+ | 2.55 | Bob Smith | 151 | CHN |
| +040+ | 2.54 | Lefty Gomez | 128.7 | NYA |
| +041+ | 2.49 | Firpo Marberry | 116.7 | MIN |
| +045+ | 2.28 | Jack Ogden | 68.3 | CIN |
| +048+ | 2.17 | Bump Hadley | 104.7 | MIN |
| +053+ | 2.03 | Syl Johnson | 118.7 | SLN |
| +059+ | 1.88 | George Uhle | 127.3 | DET |
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