| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 16.49 | 193107170_DET_OAK |
| Freddie Fitzsimmons | SFN | 6.38 | 193107170_SFN_CHN |
| Dazzy Vance | LAN | 3.05 | 193107180_LAN_CHN |
| Charlie Root | CHN | 2.43 | 193107160_SFN_CHN |
| Ray Kremer | PIT | 1.52 | 193107170_PHI_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sam Gray | BAL | -1.35 | 193107160_BAL_BOS |
| Roy Mahaffey | OAK | -0.93 | 193107160_DET_OAK |
| Vic Frazier | CHA | -0.83 | 193107170_CHA_MIN |
| Hod Lisenbee | BOS | -0.68 | 193107160_BAL_BOS |
| Ben Cantwell | ATL | -0.66 | 193107182_ATL_PIT |
Based on accumulated WAA for this season up to 1931-07-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.78 | Lefty Grove | 178 | OAK |
| +013+ | 4.29 | Freddie Fitzsimmons | 149.7 | SFN |
| +014+ | 4.26 | Ed Brandt | 141.7 | ATL |
| +016+ | 4.01 | Watty Clark | 119.7 | LAN |
| +017+ | 3.9 | Tom Zachary | 116.7 | ATL |
| +018+ | 3.78 | Bill Walker | 119 | SFN |
| +019+ | 3.78 | Ray Benge | 143.7 | PHI |
| +023+ | 3.43 | Heinie Meine | 158 | PIT |
| +024+ | 3.42 | Dazzy Vance | 128.7 | LAN |
| +025+ | 3.42 | Bill Hallahan | 138.7 | SLN |
| +026+ | 3.41 | Ray Kremer | 151.3 | PIT |
| +027+ | 3.31 | Lloyd Brown | 157.7 | MIN |
| +028+ | 3.14 | Carl Hubbell | 121 | SFN |
| +030+ | 3.02 | Si Johnson | 152 | CIN |
| +032+ | 2.84 | Charlie Root | 134.3 | CHN |
| +033+ | 2.78 | Jack Ogden | 54.3 | CIN |
| +034+ | 2.61 | George Earnshaw | 190 | OAK |
| +042+ | 2.22 | Rube Walberg | 175.3 | OAK |
| +045+ | 2.07 | Bob Smith | 135 | CHN |
| +057+ | 1.71 | Bump Hadley | 95.7 | MIN |
| +059+ | 1.69 | Sam Jones | 97.7 | MIN |
| +060+ | 1.66 | Red Lucas | 132.3 | CIN |
| +061+ | 1.65 | Bruce Cunningham | 87.3 | ATL |
| +064+ | 1.63 | Ed Wells | 64.3 | NYA |
| +067+ | 1.58 | Firpo Marberry | 98.7 | MIN |
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