| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Hubbell | SFN | 5.11 | 193107230_SFN_CIN |
| Watty Clark | LAN | 4.39 | 193107240_LAN_PIT |
| Tom Zachary | ATL | 3.68 | 193107220_ATL_CHN |
| Charlie Root | CHN | 3.51 | 193107240_ATL_CHN |
| Ray Kremer | PIT | 1.78 | 193107222_LAN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Vic Frazier | CHA | -1.84 | 193107240_CHA_BOS |
| Jack Russell | BOS | -1.71 | 193107230_CHA_BOS |
| Red Ruffing | NYA | -1.13 | 193107222_DET_NYA |
| Chief Hogsett | DET | -1.09 | 193107240_DET_NYA |
| Sam Gray | BAL | -0.63 | 193107220_BAL_MIN |
Based on accumulated WAA for this season up to 1931-07-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 8.83 | Lefty Grove | 178 | OAK |
| +011+ | 4.48 | Ed Brandt | 150.7 | ATL |
| +013+ | 4.35 | Charlie Root | 152.3 | CHN |
| +016+ | 4.17 | Lloyd Brown | 166.7 | MIN |
| +017+ | 4.12 | Carl Hubbell | 139 | SFN |
| +018+ | 4.07 | Ray Kremer | 160.3 | PIT |
| +019+ | 3.89 | Tom Zachary | 125.3 | ATL |
| +020+ | 3.86 | Ray Benge | 150.7 | PHI |
| +021+ | 3.79 | Bill Walker | 129.3 | SFN |
| +023+ | 3.65 | Freddie Fitzsimmons | 153.3 | SFN |
| +024+ | 3.64 | Watty Clark | 134.7 | LAN |
| +027+ | 3.57 | Bill Hallahan | 140.3 | SLN |
| +029+ | 3.42 | Si Johnson | 169 | CIN |
| +030+ | 3.18 | Heinie Meine | 162 | PIT |
| +031+ | 2.9 | George Earnshaw | 201 | OAK |
| +034+ | 2.56 | Lefty Gomez | 128.7 | NYA |
| +035+ | 2.54 | Dazzy Vance | 132 | LAN |
| +036+ | 2.52 | Rube Walberg | 184.3 | OAK |
| +037+ | 2.31 | Jack Ogden | 60.3 | CIN |
| +055+ | 1.89 | George Uhle | 127.3 | DET |
| +056+ | 1.88 | Red Lucas | 141.3 | CIN |
| +057+ | 1.87 | Bob Smith | 142 | CHN |
| +059+ | 1.84 | Bump Hadley | 101.3 | MIN |
| +060+ | 1.82 | Firpo Marberry | 107.7 | MIN |
| +064+ | 1.73 | Larry French | 164.3 | PIT |
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