| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 16.32 | 193108190_OAK_CHA |
| Carl Hubbell | SFN | 4.9 | 193108200_CIN_SFN |
| Ed Brandt | ATL | 4.07 | 193108201_PIT_ATL |
| Ray Kremer | PIT | 2.4 | 193108201_PIT_ATL |
| Firpo Marberry | MIN | 2.4 | 193108200_MIN_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Waite Hoyt | OAK | -2.35 | 193108200_OAK_CHA |
| Guy Bush | CHN | -1.3 | 193108192_CHN_LAN |
| Hank Johnson | NYA | -1.15 | 193108210_NYA_BAL |
| Ed Durham | BOS | -1.11 | 193108210_BOS_DET |
| Art Herring | DET | -0.87 | 193108200_BOS_DET |
Based on accumulated WAA for this season up to 1931-08-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 11.35 | Lefty Grove | 227.3 | OAK |
| +008+ | 7.46 | Ed Brandt | 198.7 | ATL |
| +010+ | 6.96 | Bill Walker | 181 | SFN |
| +011+ | 6.53 | Carl Hubbell | 191.7 | SFN |
| +013+ | 5.66 | Freddie Fitzsimmons | 206.3 | SFN |
| +014+ | 5.63 | Ray Kremer | 202.3 | PIT |
| +016+ | 5.25 | Ray Benge | 202.7 | PHI |
| +017+ | 5.19 | Lefty Gomez | 175.3 | NYA |
| +021+ | 4.59 | Tom Zachary | 164.7 | ATL |
| +022+ | 4.54 | Lloyd Brown | 199.7 | MIN |
| +025+ | 4.22 | Si Johnson | 211.7 | CIN |
| +027+ | 4.06 | Larry French | 223 | PIT |
| +029+ | 4.04 | Dazzy Vance | 177 | LAN |
| +028+ | 4.04 | Bill Hallahan | 181.7 | SLN |
| +030+ | 3.91 | Watty Clark | 175.7 | LAN |
| +035+ | 3.53 | Charlie Root | 196.7 | CHN |
| +037+ | 3.4 | George Earnshaw | 236.3 | OAK |
| +038+ | 3.29 | Bob Smith | 187.7 | CHN |
| +039+ | 3.24 | Heinie Meine | 208 | PIT |
| +040+ | 3.13 | Larry Benton | 152.7 | CIN |
| +041+ | 2.96 | Firpo Marberry | 163.7 | MIN |
| +043+ | 2.94 | Fred Frankhouse | 97.7 | ATL |
| +044+ | 2.9 | Flint Rhem | 161.3 | SLN |
| +045+ | 2.89 | Jesse Haines | 107.3 | SLN |
| +052+ | 2.57 | George Uhle | 166 | DET |
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