| 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 |
| Firpo Marberry | MIN | 2.4 | 193108200_MIN_CLE |
| Ray Kremer | PIT | 2.4 | 193108201_PIT_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Stew Bolen | PHI | -2.76 | 193108180_PIT_PHI |
| Waite Hoyt | OAK | -2.35 | 193108200_OAK_CHA |
| Red Ruffing | NYA | -1.89 | 193108180_NYA_DET |
| Guy Bush | CHN | -1.3 | 193108192_CHN_LAN |
| Art Herring | DET | -0.87 | 193108200_BOS_DET |
Based on accumulated WAA for this season up to 1931-08-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 11.29 | Lefty Grove | 227.3 | OAK |
| +008+ | 7.41 | Ed Brandt | 198.7 | ATL |
| +009+ | 6.92 | Bill Walker | 181 | SFN |
| +011+ | 6.49 | Carl Hubbell | 191.7 | SFN |
| +013+ | 5.6 | Freddie Fitzsimmons | 206.3 | SFN |
| +014+ | 5.56 | Ray Kremer | 202.3 | PIT |
| +016+ | 5.2 | Ray Benge | 202.7 | PHI |
| +017+ | 5.15 | Lefty Gomez | 175.3 | NYA |
| +021+ | 4.55 | Tom Zachary | 164.7 | ATL |
| +025+ | 4.26 | Lloyd Brown | 190.7 | MIN |
| +026+ | 4.16 | Si Johnson | 211.7 | CIN |
| +028+ | 3.99 | Dazzy Vance | 177 | LAN |
| +027+ | 3.99 | Bill Hallahan | 181.7 | SLN |
| +029+ | 3.98 | Larry French | 223 | PIT |
| +031+ | 3.86 | Watty Clark | 175.7 | LAN |
| +034+ | 3.48 | Charlie Root | 196.7 | CHN |
| +037+ | 3.34 | George Earnshaw | 236.3 | OAK |
| +038+ | 3.24 | Bob Smith | 187.7 | CHN |
| +039+ | 3.18 | Rube Walberg | 221.7 | OAK |
| +040+ | 3.17 | Heinie Meine | 208 | PIT |
| +042+ | 3.09 | Larry Benton | 152.7 | CIN |
| +044+ | 2.92 | Fred Frankhouse | 97.7 | ATL |
| +043+ | 2.92 | Firpo Marberry | 163.7 | MIN |
| +046+ | 2.86 | Flint Rhem | 161.3 | SLN |
| +045+ | 2.86 | Jesse Haines | 107.3 | SLN |
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