| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 14.19 | 193108031_MIN_OAK |
| Carl Hubbell | SFN | 5.65 | 193108010_ATL_SFN |
| Tom Zachary | ATL | 3.82 | 193108022_ATL_SFN |
| Charlie Root | CHN | 3.68 | 193108020_SLN_CHN |
| Si Johnson | CIN | 1.54 | 193108030_CIN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | -2.66 | 193108021_NYA_BOS |
| Jack Russell | BOS | -2.28 | 193108021_NYA_BOS |
| Vic Frazier | CHA | -1.19 | 193108010_CHA_DET |
| Phil Collins | PHI | -0.98 | 193108022_PHI_LAN |
| Sam Gray | BAL | -0.58 | 193108021_CLE_BAL |
Based on accumulated WAA for this season up to 1931-08-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 9.65 | Lefty Grove | 198 | OAK |
| +009+ | 5.58 | Carl Hubbell | 159.7 | SFN |
| +011+ | 5.36 | Ed Brandt | 160.7 | ATL |
| +012+ | 4.95 | Freddie Fitzsimmons | 170.3 | SFN |
| +015+ | 4.59 | Ray Kremer | 176.3 | PIT |
| +016+ | 4.53 | Lloyd Brown | 175.3 | MIN |
| +020+ | 4.33 | Ray Benge | 168.7 | PHI |
| +022+ | 4.26 | Bill Walker | 144 | SFN |
| +023+ | 3.93 | Charlie Root | 168.3 | CHN |
| +024+ | 3.91 | Tom Zachary | 139.3 | ATL |
| +027+ | 3.54 | Larry French | 187.3 | PIT |
| +028+ | 3.49 | Dazzy Vance | 145 | LAN |
| +030+ | 3.36 | Watty Clark | 143.7 | LAN |
| +031+ | 3.3 | Lefty Gomez | 139.3 | NYA |
| +032+ | 3.3 | Bill Hallahan | 151.7 | SLN |
| +033+ | 3.15 | Heinie Meine | 168 | PIT |
| +034+ | 3.1 | Rube Walberg | 204 | OAK |
| +035+ | 3.06 | Bump Hadley | 114.3 | MIN |
| +036+ | 3.02 | Si Johnson | 185 | CIN |
| +038+ | 2.9 | George Earnshaw | 217 | OAK |
| +043+ | 2.44 | Firpo Marberry | 129.7 | MIN |
| +045+ | 2.38 | Bob Smith | 165.3 | CHN |
| +049+ | 2.24 | Jack Ogden | 68.3 | CIN |
| +051+ | 2.14 | Red Lucas | 157.3 | CIN |
| +054+ | 2.11 | George Uhle | 137 | DET |
_