| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 17.45 | 193107131_MIN_OAK |
| Freddie Fitzsimmons | SFN | 5.55 | 193107122_PHI_SFN |
| Dazzy Vance | LAN | 3.11 | 193107140_LAN_SLN |
| Tom Zachary | ATL | 3.1 | 193107140_ATL_CIN |
| Charlie Root | CHN | 2.93 | 193107121_CHN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Milt Shoffner | CLE | -2.28 | 193107141_CLE_NYA |
| Phil Collins | PHI | -1.82 | 193107142_PHI_PIT |
| Guy Bush | CHN | -1.79 | 193107140_SFN_CHN |
| Waite Hoyt | OAK | -1.7 | 193107121_OAK_BOS |
| Art Herring | DET | -1.09 | 193107140_DET_OAK |
Based on accumulated WAA for this season up to 1931-07-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.29 | Lefty Grove | 169 | OAK |
| +009+ | 5.14 | Freddie Fitzsimmons | 144.7 | SFN |
| +015+ | 3.95 | Tom Zachary | 116.7 | ATL |
| +016+ | 3.86 | Watty Clark | 110.7 | LAN |
| +017+ | 3.73 | Ed Brandt | 133.7 | ATL |
| +020+ | 3.48 | Ray Kremer | 142.3 | PIT |
| +021+ | 3.47 | Ray Benge | 135.7 | PHI |
| +022+ | 3.42 | Lloyd Brown | 157.7 | MIN |
| +023+ | 3.3 | Heinie Meine | 149 | PIT |
| +025+ | 3.17 | Si Johnson | 152 | CIN |
| +029+ | 2.96 | Bill Walker | 110 | SFN |
| +027+ | 2.96 | George Earnshaw | 181 | OAK |
| +028+ | 2.96 | Dazzy Vance | 120.7 | LAN |
| +030+ | 2.93 | Carl Hubbell | 114 | SFN |
| +033+ | 2.64 | Bill Hallahan | 129.7 | SLN |
| +035+ | 2.51 | Charlie Root | 125.3 | CHN |
| +040+ | 2.26 | Socks Seibold | 123 | ATL |
| +048+ | 1.93 | Rube Walberg | 166.3 | OAK |
| +049+ | 1.93 | Fred Frankhouse | 70.7 | ATL |
| +050+ | 1.93 | George Uhle | 110.3 | DET |
| +052+ | 1.91 | Jack Ogden | 45.3 | CIN |
| +054+ | 1.84 | Clarence Mitchell | 122 | SFN |
| +057+ | 1.74 | Frank Watt | 70 | PHI |
| +058+ | 1.68 | Ed Wells | 62.3 | NYA |
| +061+ | 1.58 | Lefty Gomez | 110.7 | NYA |
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