| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 16.76 | 193107251_CLE_OAK |
| Bill Walker | SFN | 5.09 | 193107240_SFN_CIN |
| Watty Clark | LAN | 4.39 | 193107240_LAN_PIT |
| Charlie Root | CHN | 3.51 | 193107240_ATL_CHN |
| Lloyd Brown | MIN | 2.5 | 193107260_BAL_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ownie Carroll | CIN | -2.99 | 193107251_SFN_CIN |
| Pat Caraway | CHA | -2.09 | 193107262_CHA_NYA |
| Charlie Sullivan | DET | -1.89 | 193107262_DET_BOS |
| Jack Russell | BOS | -1.66 | 193107262_DET_BOS |
| Red Ruffing | NYA | -1.49 | 193107262_CHA_NYA |
Based on accumulated WAA for this season up to 1931-07-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 9.05 | Lefty Grove | 187 | OAK |
| +011+ | 4.58 | Lloyd Brown | 171.3 | MIN |
| +013+ | 4.54 | Ed Brandt | 151.7 | ATL |
| +014+ | 4.48 | Freddie Fitzsimmons | 162.3 | SFN |
| +016+ | 4.33 | Carl Hubbell | 141.7 | SFN |
| +017+ | 4.3 | Charlie Root | 152.3 | CHN |
| +019+ | 4.16 | Bill Hallahan | 149.3 | SLN |
| +020+ | 4.01 | Ray Benge | 158.7 | PHI |
| +021+ | 3.93 | Ray Kremer | 160.3 | PIT |
| +023+ | 3.85 | Tom Zachary | 125.3 | ATL |
| +024+ | 3.74 | Bill Walker | 129.3 | SFN |
| +027+ | 3.56 | Watty Clark | 134.7 | LAN |
| +029+ | 3.44 | Si Johnson | 170 | CIN |
| +030+ | 3.34 | Dazzy Vance | 141 | LAN |
| +031+ | 3.04 | Heinie Meine | 162 | PIT |
| +033+ | 2.86 | George Earnshaw | 201 | OAK |
| +034+ | 2.73 | Larry French | 178.3 | PIT |
| +036+ | 2.55 | Rube Walberg | 185 | OAK |
| +038+ | 2.5 | Lefty Gomez | 128.7 | NYA |
| +039+ | 2.49 | Bob Smith | 151 | CHN |
| +040+ | 2.45 | Firpo Marberry | 116.7 | MIN |
| +042+ | 2.25 | Jack Ogden | 68.3 | CIN |
| +047+ | 2.13 | Bump Hadley | 104.7 | MIN |
| +054+ | 1.99 | Syl Johnson | 118.7 | SLN |
| +061+ | 1.82 | George Uhle | 127.3 | DET |
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