| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Walker | SFN | 6.46 | 193108222_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 |
| Lefty Gomez | NYA | 2.12 | 193108200_NYA_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pat Caraway | CHA | -5.37 | 193108220_OAK_CHA |
| Waite Hoyt | OAK | -2.35 | 193108200_OAK_CHA |
| Jack Russell | BOS | -2.19 | 193108220_BOS_DET |
| Garland Braxton | BAL | -1.82 | 193108220_NYA_BAL |
| Hank Johnson | NYA | -1.15 | 193108210_NYA_BAL |
Based on accumulated WAA for this season up to 1931-08-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 11.32 | Lefty Grove | 227.3 | OAK |
| +008+ | 7.61 | Bill Walker | 190 | SFN |
| +009+ | 7.44 | Ed Brandt | 198.7 | ATL |
| +011+ | 6.51 | Carl Hubbell | 191.7 | SFN |
| +014+ | 5.63 | Ray Kremer | 202.3 | PIT |
| +015+ | 5.63 | Freddie Fitzsimmons | 206.3 | SFN |
| +016+ | 5.24 | Tom Zachary | 173.7 | ATL |
| +017+ | 5.22 | Ray Benge | 202.7 | PHI |
| +019+ | 5.14 | Lefty Gomez | 175.3 | NYA |
| +023+ | 4.71 | Si Johnson | 218.7 | CIN |
| +024+ | 4.54 | Lloyd Brown | 199.7 | MIN |
| +027+ | 4.05 | Larry French | 223 | PIT |
| +028+ | 4.04 | Bill Hallahan | 181.7 | SLN |
| +029+ | 4.02 | Dazzy Vance | 177 | LAN |
| +032+ | 3.89 | Watty Clark | 175.7 | LAN |
| +034+ | 3.54 | Charlie Root | 196.7 | CHN |
| +037+ | 3.38 | George Earnshaw | 236.3 | OAK |
| +038+ | 3.3 | Bob Smith | 187.7 | CHN |
| +039+ | 3.24 | Heinie Meine | 208 | PIT |
| +041+ | 3.13 | Larry Benton | 152.7 | CIN |
| +043+ | 2.96 | Firpo Marberry | 163.7 | MIN |
| +044+ | 2.93 | Fred Frankhouse | 97.7 | ATL |
| +045+ | 2.89 | Jesse Haines | 107.3 | SLN |
| +046+ | 2.87 | Glenn Spencer | 136.7 | PIT |
| +050+ | 2.71 | Rube Walberg | 236 | OAK |
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