| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 13.32 | 193109080_MIN_OAK |
| Bill Walker | SFN | 7.22 | 193109081_PHI_SFN |
| Ed Brandt | ATL | 4.25 | 193109071_ATL_LAN |
| Larry French | PIT | 1.62 | 193109071_CIN_PIT |
| Watty Clark | LAN | 1.2 | 193109071_ATL_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pat Caraway | CHA | -8.98 | 193109082_CHA_CLE |
| Jack Russell | BOS | -2.71 | 193109072_MIN_BOS |
| Roxie Lawson | CLE | -1.56 | 193109081_CHA_CLE |
| Chief Hogsett | DET | -1.46 | 193109072_BAL_DET |
| Guy Bush | CHN | -1.13 | 193109072_SLN_CHN |
Based on accumulated WAA for this season up to 1931-09-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 12.84 | Lefty Grove | 258.7 | OAK |
| +006+ | 9.31 | Bill Walker | 222 | SFN |
| +009+ | 8.58 | Carl Hubbell | 229.7 | SFN |
| +012+ | 7.08 | Ed Brandt | 232.3 | ATL |
| +013+ | 6.96 | Freddie Fitzsimmons | 234.7 | SFN |
| +017+ | 5.47 | Tom Zachary | 202.3 | ATL |
| +018+ | 5.37 | Ray Kremer | 225.3 | PIT |
| +020+ | 5.27 | Heinie Meine | 244 | PIT |
| +022+ | 5.23 | Lefty Gomez | 204.3 | NYA |
| +024+ | 5.21 | Larry French | 250 | PIT |
| +023+ | 5.21 | Bill Hallahan | 207.3 | SLN |
| +028+ | 4.74 | Ray Benge | 219.3 | PHI |
| +030+ | 4.53 | George Earnshaw | 253 | OAK |
| +032+ | 4.17 | Si Johnson | 245.7 | CIN |
| +034+ | 4.01 | Watty Clark | 200.7 | LAN |
| +037+ | 3.87 | Jim Mooney | 55.7 | SFN |
| +038+ | 3.87 | Bob Smith | 215.3 | CHN |
| +039+ | 3.74 | Lloyd Brown | 222 | MIN |
| +042+ | 3.55 | Firpo Marberry | 191.3 | MIN |
| +044+ | 3.43 | Syl Johnson | 164.7 | SLN |
| +046+ | 3.39 | Charlie Root | 225.7 | CHN |
| +045+ | 3.39 | Glenn Spencer | 160.7 | PIT |
| +047+ | 3.31 | Flint Rhem | 185.3 | SLN |
| +050+ | 3.14 | Jesse Haines | 122.3 | SLN |
| +051+ | 2.97 | Dazzy Vance | 198.7 | LAN |
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