| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 14.19 | 193108031_MIN_OAK |
| Carl Hubbell | SFN | 6.52 | 193108050_LAN_SFN |
| Ed Brandt | ATL | 2.66 | 193108041_ATL_PHI |
| Dazzy Vance | LAN | 2.23 | 193108042_LAN_SFN |
| Larry French | PIT | 2.1 | 193108051_SLN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Guy Bush | CHN | -2.45 | 193108041_CIN_CHN |
| Ray Kolp | CIN | -1.59 | 193108050_CIN_CHN |
| Chief Hogsett | DET | -1.51 | 193108040_CHA_DET |
| Spades Wood | PIT | -0.62 | 193108052_SLN_PIT |
| Vic Frazier | CHA | -0.53 | 193108040_CHA_DET |
Based on accumulated WAA for this season up to 1931-08-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 9.59 | Lefty Grove | 198 | OAK |
| +008+ | 5.89 | Carl Hubbell | 167.7 | SFN |
| +011+ | 5.48 | Ed Brandt | 168.7 | ATL |
| +012+ | 5.36 | Freddie Fitzsimmons | 179.3 | SFN |
| +014+ | 4.74 | Ray Benge | 177.7 | PHI |
| +016+ | 4.67 | Bill Walker | 153 | SFN |
| +017+ | 4.49 | Ray Kremer | 176.3 | PIT |
| +018+ | 4.48 | Lloyd Brown | 175.3 | MIN |
| +024+ | 3.89 | Bill Hallahan | 160.7 | SLN |
| +025+ | 3.89 | Charlie Root | 168.3 | CHN |
| +026+ | 3.88 | Tom Zachary | 139.3 | ATL |
| +027+ | 3.75 | Larry French | 199.3 | PIT |
| +029+ | 3.53 | Dazzy Vance | 152 | LAN |
| +030+ | 3.52 | Heinie Meine | 175 | PIT |
| +032+ | 3.28 | Lefty Gomez | 139.3 | NYA |
| +035+ | 3.04 | Rube Walberg | 204 | OAK |
| +036+ | 3.02 | Bump Hadley | 114.3 | MIN |
| +037+ | 3.01 | Watty Clark | 151 | LAN |
| +038+ | 2.99 | Si Johnson | 187 | CIN |
| +040+ | 2.83 | George Earnshaw | 217 | OAK |
| +042+ | 2.55 | Fred Heimach | 84 | LAN |
| +045+ | 2.4 | Firpo Marberry | 129.7 | MIN |
| +047+ | 2.34 | Bob Smith | 165.3 | CHN |
| +052+ | 2.12 | Red Lucas | 157.3 | CIN |
| +054+ | 2.06 | Jesse Haines | 92.3 | SLN |
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