| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 16.35 | 193109240_BOS_OAK |
| Lefty Gomez | NYA | 3.83 | 193109261_MIN_NYA |
| Lloyd Brown | MIN | 2.35 | 193109262_MIN_NYA |
| Larry French | PIT | 2.18 | 193109240_PHI_PIT |
| Bill Hallahan | SLN | 1.47 | 193109260_SLN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tommy Thomas | CHA | -1.38 | 193109261_CHA_BAL |
| Tommy Bridges | DET | -1.37 | 193109260_DET_CLE |
| Red Ruffing | NYA | -0.69 | 193109262_MIN_NYA |
| Wally Hebert | BAL | -0.49 | 193109262_CHA_BAL |
| Jumbo Elliott | PHI | -0.31 | 193109240_PHI_PIT |
Based on accumulated WAA for this season up to 1931-09-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 14.37 | Lefty Grove | 285.7 | OAK |
| +006+ | 10.28 | Bill Walker | 239.3 | SFN |
| +009+ | 8.28 | Carl Hubbell | 247 | SFN |
| +012+ | 7.82 | Freddie Fitzsimmons | 251 | SFN |
| +015+ | 7.38 | Lefty Gomez | 242.3 | NYA |
| +017+ | 6.94 | Heinie Meine | 275 | PIT |
| +018+ | 6.82 | Ed Brandt | 249.7 | ATL |
| +024+ | 5.14 | Larry French | 276 | PIT |
| +025+ | 4.97 | Ray Benge | 238 | PHI |
| +026+ | 4.9 | Lloyd Brown | 258.7 | MIN |
| +027+ | 4.71 | Watty Clark | 224.3 | LAN |
| +030+ | 4.56 | Bill Hallahan | 248.7 | SLN |
| +033+ | 4.43 | Syl Johnson | 176.7 | SLN |
| +036+ | 4.31 | Bob Smith | 235.3 | CHN |
| +038+ | 4.16 | Bump Hadley | 179.7 | MIN |
| +041+ | 4.03 | Ray Kremer | 231 | PIT |
| +042+ | 3.99 | Larry Benton | 203.7 | CIN |
| +043+ | 3.77 | George Earnshaw | 278 | OAK |
| +045+ | 3.75 | Dazzy Vance | 218.7 | LAN |
| +048+ | 3.5 | Red Lucas | 228.7 | CIN |
| +049+ | 3.49 | Jim Mooney | 71.7 | SFN |
| +050+ | 3.47 | Firpo Marberry | 219 | MIN |
| +051+ | 3.4 | Glenn Spencer | 180 | PIT |
| +054+ | 3.19 | Charlie Root | 245.7 | CHN |
| +060+ | 2.82 | Paul Derringer | 201.7 | SLN |
_