| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Walker | SFN | 4.56 | 193108080_SFN_PHI |
| Ed Brandt | ATL | 2.57 | 193108091_PHI_ATL |
| Charlie Root | CHN | 2.49 | 193108080_CHN_SLN |
| Larry French | PIT | 2 | 193108091_PIT_CIN |
| Dazzy Vance | LAN | 1.82 | 193108080_LAN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pat Caraway | CHA | -5.92 | 193108091_BAL_CHA |
| Rollie Stiles | BAL | -3.25 | 193108082_BAL_CHA |
| Guy Bush | CHN | -1.93 | 193108090_CHN_SLN |
| Red Ruffing | NYA | -1.8 | 193108080_OAK_NYA |
| Chief Hogsett | DET | -1.55 | 193108090_DET_CLE |
Based on accumulated WAA for this season up to 1931-08-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 9.81 | Lefty Grove | 200.3 | OAK |
| +009+ | 5.98 | Carl Hubbell | 168.7 | SFN |
| +010+ | 5.67 | Ed Brandt | 177.7 | ATL |
| +011+ | 5.59 | Freddie Fitzsimmons | 188.3 | SFN |
| +013+ | 5.12 | Bill Walker | 162 | SFN |
| +014+ | 4.91 | Ray Kremer | 185.3 | PIT |
| +016+ | 4.62 | Lloyd Brown | 177.3 | MIN |
| +018+ | 4.47 | Ray Benge | 183.7 | PHI |
| +021+ | 4.3 | Tom Zachary | 148.3 | ATL |
| +026+ | 3.96 | Dazzy Vance | 161 | LAN |
| +028+ | 3.84 | Bill Hallahan | 160.7 | SLN |
| +029+ | 3.74 | Heinie Meine | 184 | PIT |
| +030+ | 3.6 | Lefty Gomez | 147.3 | NYA |
| +031+ | 3.39 | George Earnshaw | 225 | OAK |
| +032+ | 3.32 | Larry French | 206 | PIT |
| +034+ | 3.01 | Firpo Marberry | 138.7 | MIN |
| +036+ | 2.98 | Watty Clark | 151 | LAN |
| +037+ | 2.97 | Si Johnson | 195.7 | CIN |
| +039+ | 2.76 | Bump Hadley | 116.3 | MIN |
| +041+ | 2.72 | Rube Walberg | 211.7 | OAK |
| +044+ | 2.54 | Charlie Root | 169.7 | CHN |
| +045+ | 2.5 | Burleigh Grimes | 166.3 | SLN |
| +048+ | 2.32 | Larry Benton | 136.7 | CIN |
| +049+ | 2.24 | Flint Rhem | 146.3 | SLN |
| +058+ | 2.07 | Glenn Spencer | 111.7 | PIT |
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