| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 13.32 | 193109080_MIN_OAK |
| Bill Walker | SFN | 7.22 | 193109081_PHI_SFN |
| Ray Kremer | PIT | 2.11 | 193109100_SFN_PIT |
| Bill Hallahan | SLN | 2.09 | 193109100_ATL_SLN |
| Lloyd Brown | MIN | 1.03 | 193109100_CLE_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pat Caraway | CHA | -8.98 | 193109082_CHA_CLE |
| Roxie Lawson | CLE | -1.56 | 193109081_CHA_CLE |
| Tommy Bridges | DET | -1.24 | 193109100_DET_BOS |
| Sheriff Blake | PHI | -0.81 | 193109082_PHI_SFN |
| Ray Phelps | LAN | -0.38 | 193109080_ATL_LAN |
Based on accumulated WAA for this season up to 1931-09-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 12.84 | Lefty Grove | 258.7 | OAK |
| +006+ | 9.31 | Bill Walker | 222 | SFN |
| +008+ | 9.23 | Carl Hubbell | 238.7 | SFN |
| +012+ | 7.1 | Ed Brandt | 232.3 | ATL |
| +013+ | 6.95 | Freddie Fitzsimmons | 234.7 | SFN |
| +017+ | 5.66 | Bill Hallahan | 216.3 | SLN |
| +018+ | 5.49 | Tom Zachary | 202.3 | ATL |
| +021+ | 5.27 | Heinie Meine | 244 | PIT |
| +023+ | 5.23 | Lefty Gomez | 204.3 | NYA |
| +024+ | 5.21 | Larry French | 250 | PIT |
| +026+ | 4.76 | George Earnshaw | 262 | OAK |
| +027+ | 4.75 | Ray Benge | 219.3 | PHI |
| +029+ | 4.56 | Ray Kremer | 225.7 | PIT |
| +031+ | 4.36 | Lloyd Brown | 230.7 | MIN |
| +033+ | 4.16 | Si Johnson | 245.7 | CIN |
| +034+ | 4.02 | Watty Clark | 200.7 | LAN |
| +038+ | 3.87 | Jim Mooney | 55.7 | SFN |
| +039+ | 3.86 | Bob Smith | 215.3 | CHN |
| +042+ | 3.66 | Dazzy Vance | 205.7 | LAN |
| +043+ | 3.55 | Firpo Marberry | 191.3 | MIN |
| +045+ | 3.48 | Glenn Spencer | 161.7 | PIT |
| +046+ | 3.42 | Syl Johnson | 164.7 | SLN |
| +048+ | 3.38 | Charlie Root | 225.7 | CHN |
| +049+ | 3.31 | Flint Rhem | 185.3 | SLN |
| +051+ | 3.14 | Jesse Haines | 122.3 | SLN |
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