| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | OAK | 15.72 | 193108150_OAK_CLE |
| Freddie Fitzsimmons | SFN | 4.57 | 193108131_PIT_SFN |
| Ed Brandt | ATL | 3.08 | 193108141_CIN_ATL |
| Dazzy Vance | LAN | 2.1 | 193108130_SLN_LAN |
| Larry French | PIT | 1.35 | 193108132_PIT_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Stew Bolen | PHI | -3.27 | 193108152_PIT_PHI |
| Chief Hogsett | DET | -1.8 | 193108150_NYA_DET |
| Spades Wood | PIT | -1.25 | 193108151_PIT_PHI |
| Ray Kolp | CIN | -1.25 | 193108142_CIN_ATL |
| Guy Bush | CHN | -1.14 | 193108140_CHN_PHI |
Based on accumulated WAA for this season up to 1931-08-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 10.72 | Lefty Grove | 218.3 | OAK |
| +009+ | 6.59 | Ed Brandt | 186.7 | ATL |
| +010+ | 6.09 | Freddie Fitzsimmons | 197.3 | SFN |
| +011+ | 6.03 | Bill Walker | 171 | SFN |
| +013+ | 5.44 | Carl Hubbell | 175.7 | SFN |
| +015+ | 5.09 | Ray Kremer | 194.3 | PIT |
| +018+ | 4.75 | Lefty Gomez | 164 | NYA |
| +019+ | 4.53 | Ray Benge | 192.7 | PHI |
| +022+ | 4.48 | Lloyd Brown | 182 | MIN |
| +023+ | 4.37 | Tom Zachary | 157.3 | ATL |
| +026+ | 3.91 | Bill Hallahan | 169.7 | SLN |
| +027+ | 3.91 | Firpo Marberry | 147.7 | MIN |
| +028+ | 3.83 | Dazzy Vance | 168 | LAN |
| +032+ | 3.53 | Si Johnson | 202.7 | CIN |
| +033+ | 3.44 | George Earnshaw | 236.3 | OAK |
| +034+ | 3.2 | Larry French | 214 | PIT |
| +035+ | 3.17 | Rube Walberg | 220.7 | OAK |
| +036+ | 3.02 | Heinie Meine | 199 | PIT |
| +037+ | 2.96 | Larry Benton | 144.7 | CIN |
| +038+ | 2.94 | Charlie Root | 179.7 | CHN |
| +039+ | 2.93 | Jesse Haines | 101.3 | SLN |
| +041+ | 2.84 | Watty Clark | 160 | LAN |
| +047+ | 2.58 | Bill Sherdel | 104.3 | ATL |
| +048+ | 2.54 | Burleigh Grimes | 166.3 | SLN |
| +049+ | 2.51 | Glenn Spencer | 119.7 | PIT |
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