| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Hubbell | SFN | 6.52 | 193108050_LAN_SFN |
| Tom Zachary | ATL | 2.55 | 193108070_LAN_ATL |
| Ray Kremer | PIT | 2.43 | 193108070_CIN_PIT |
| Firpo Marberry | MIN | 1.43 | 193108060_BOS_MIN |
| Rube Walberg | OAK | 1.31 | 193108060_OAK_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pat Caraway | CHA | -5.05 | 193108060_BAL_CHA |
| Jack Russell | BOS | -2.27 | 193108060_BOS_MIN |
| Ray Kolp | CIN | -1.59 | 193108050_CIN_CHN |
| Phil Collins | PHI | -1.3 | 193108070_SFN_PHI |
| Spades Wood | PIT | -0.62 | 193108052_SLN_PIT |
Based on accumulated WAA for this season up to 1931-08-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 9.62 | Lefty Grove | 198 | OAK |
| +009+ | 6.03 | Carl Hubbell | 168.7 | SFN |
| +011+ | 5.48 | Ed Brandt | 168.7 | ATL |
| +012+ | 5.39 | Freddie Fitzsimmons | 179.3 | SFN |
| +013+ | 4.93 | Ray Kremer | 185.3 | PIT |
| +015+ | 4.74 | Ray Benge | 177.7 | PHI |
| +016+ | 4.7 | Bill Walker | 153 | SFN |
| +018+ | 4.48 | Lloyd Brown | 175.3 | MIN |
| +022+ | 4.34 | Tom Zachary | 148.3 | ATL |
| +026+ | 3.9 | Charlie Root | 168.3 | CHN |
| +027+ | 3.89 | Bill Hallahan | 160.7 | SLN |
| +028+ | 3.75 | Larry French | 199.3 | PIT |
| +030+ | 3.63 | Lefty Gomez | 147.3 | NYA |
| +031+ | 3.54 | Dazzy Vance | 152 | LAN |
| +032+ | 3.52 | Heinie Meine | 175 | PIT |
| +034+ | 3.06 | Firpo Marberry | 138.7 | MIN |
| +036+ | 3.02 | Watty Clark | 151 | LAN |
| +035+ | 3.02 | Bump Hadley | 114.3 | MIN |
| +037+ | 3 | Si Johnson | 187 | CIN |
| +040+ | 2.85 | George Earnshaw | 217 | OAK |
| +042+ | 2.69 | Rube Walberg | 211 | OAK |
| +043+ | 2.55 | Fred Heimach | 84 | LAN |
| +044+ | 2.55 | Burleigh Grimes | 166.3 | SLN |
| +049+ | 2.35 | Bob Smith | 165.3 | CHN |
| +054+ | 2.06 | Jesse Haines | 92.3 | SLN |
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