| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 14.98 | 193108290_NYA_OAK |
| Bill Walker | SFN | 6.74 | 193108302_PHI_SFN |
| Ed Brandt | ATL | 6.05 | 193108301_ATL_LAN |
| Ray Kremer | PIT | 2.18 | 193108301_PIT_SLN |
| Lefty Gomez | NYA | 2.05 | 193108290_NYA_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Russell | BOS | -2.29 | 193108292_MIN_BOS |
| Hank Johnson | NYA | -1.88 | 193108300_NYA_BOS |
| Tommy Bridges | DET | -1.47 | 193108290_CHA_DET |
| Sam Gray | BAL | -0.59 | 193108280_BAL_CLE |
| Vic Frazier | CHA | -0.57 | 193108290_CHA_DET |
Based on accumulated WAA for this season up to 1931-08-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 11.5 | Lefty Grove | 240.7 | OAK |
| +007+ | 8.67 | Bill Walker | 207 | SFN |
| +008+ | 8.6 | Ed Brandt | 218.7 | ATL |
| +011+ | 7.04 | Carl Hubbell | 209.7 | SFN |
| +014+ | 6.02 | Freddie Fitzsimmons | 218.7 | SFN |
| +017+ | 5.2 | Larry French | 239.3 | PIT |
| +019+ | 5.11 | Bill Hallahan | 198.7 | SLN |
| +020+ | 5.09 | Ray Kremer | 216.3 | PIT |
| +022+ | 4.94 | Lloyd Brown | 208.7 | MIN |
| +024+ | 4.86 | Tom Zachary | 186.3 | ATL |
| +025+ | 4.81 | Ray Benge | 210.3 | PHI |
| +027+ | 4.38 | Dazzy Vance | 192.7 | LAN |
| +028+ | 4.27 | Lefty Gomez | 186.3 | NYA |
| +029+ | 4.06 | Charlie Root | 211.7 | CHN |
| +033+ | 3.92 | Heinie Meine | 226 | PIT |
| +034+ | 3.85 | Bob Smith | 203 | CHN |
| +035+ | 3.84 | Watty Clark | 182.7 | LAN |
| +037+ | 3.75 | Si Johnson | 228.7 | CIN |
| +040+ | 3.57 | George Earnshaw | 239 | OAK |
| +042+ | 3.46 | Jesse Haines | 116.3 | SLN |
| +044+ | 3.37 | Firpo Marberry | 177 | MIN |
| +045+ | 3.27 | Glenn Spencer | 151.7 | PIT |
| +051+ | 2.81 | Fred Heimach | 111.3 | LAN |
| +053+ | 2.64 | Syl Johnson | 155.7 | SLN |
| +055+ | 2.45 | Rube Walberg | 247 | OAK |
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