| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pat Caraway | CHA | -5.92 | 193108091_BAL_CHA |
| Guy Bush | CHN | -1.93 | 193108090_CHN_SLN |
| Chief Hogsett | DET | -1.55 | 193108090_DET_CLE |
| Dick Coffman | BAL | -0.8 | 193108092_BAL_CHA |
| Frank Watt | PHI | -0.27 | 193108092_PHI_ATL |
Based on accumulated WAA for this season up to 1931-08-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 10.45 | Lefty Grove | 209.3 | OAK |
| +009+ | 5.96 | Carl Hubbell | 168.7 | SFN |
| +010+ | 5.65 | Ed Brandt | 177.7 | ATL |
| +011+ | 5.57 | Freddie Fitzsimmons | 188.3 | SFN |
| +013+ | 5.1 | Bill Walker | 162 | SFN |
| +015+ | 4.89 | Ray Kremer | 185.3 | PIT |
| +016+ | 4.6 | Lloyd Brown | 177.3 | MIN |
| +019+ | 4.45 | Ray Benge | 183.7 | PHI |
| +023+ | 4.28 | Tom Zachary | 148.3 | ATL |
| +026+ | 3.93 | Dazzy Vance | 161 | LAN |
| +028+ | 3.85 | Firpo Marberry | 147.7 | MIN |
| +029+ | 3.82 | Bill Hallahan | 160.7 | SLN |
| +030+ | 3.71 | Heinie Meine | 184 | PIT |
| +031+ | 3.58 | Lefty Gomez | 147.3 | NYA |
| +032+ | 3.36 | George Earnshaw | 225 | OAK |
| +033+ | 3.29 | Larry French | 206 | PIT |
| +036+ | 2.96 | Watty Clark | 151 | LAN |
| +037+ | 2.94 | Si Johnson | 195.7 | CIN |
| +040+ | 2.74 | Bump Hadley | 116.3 | MIN |
| +041+ | 2.69 | Rube Walberg | 211.7 | OAK |
| +044+ | 2.52 | Charlie Root | 169.7 | CHN |
| +045+ | 2.48 | Burleigh Grimes | 166.3 | SLN |
| +048+ | 2.3 | Larry Benton | 136.7 | CIN |
| +049+ | 2.22 | Flint Rhem | 146.3 | SLN |
| +059+ | 2.05 | Glenn Spencer | 111.7 | PIT |
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