| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wes Ferrell | CLE | 7.19 | 193105080_BOS_CLE |
| Burleigh Grimes | SLN | 7.19 | 193105060_SLN_PIT |
| Bill Walker | SFN | 5.55 | 193105060_SFN_LAN |
| Lloyd Brown | MIN | 1.39 | 193105080_MIN_DET |
| Eddie Rommel | OAK | 1.2 | 193105060_BOS_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Phil Collins | PHI | -1.78 | 193105060_PHI_ATL |
| Bill Sherdel | ATL | -1.33 | 193105060_PHI_ATL |
| Hank Johnson | NYA | -1.25 | 193105060_MIN_NYA |
| Heinie Meine | PIT | -0.88 | 193105060_SLN_PIT |
| Vic Sorrell | DET | -0.31 | 193105070_CHA_DET |
Based on accumulated WAA for this season up to 1931-05-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.2 | Freddie Fitzsimmons | 41 | SFN |
| +003+ | 2.18 | Lloyd Brown | 53.7 | MIN |
| +004+ | 2.11 | Socks Seibold | 35 | ATL |
| +005+ | 2.06 | Burleigh Grimes | 39 | SLN |
| +006+ | 2 | Rube Walberg | 40.3 | OAK |
| +009+ | 1.57 | Ed Brandt | 36 | ATL |
| +010+ | 1.57 | Charlie Root | 35 | CHN |
| +014+ | 1.36 | Bill Walker | 34 | SFN |
| +016+ | 1.31 | Lefty Stewart | 38.3 | BAL |
| XXXXX | 1.24 | Ray Kremer | 33 | PIT |
| XXXXX | 1.13 | Pat Malone | 25.7 | CHN |
| XXXXX | 1.12 | Clarence Mitchell | 36 | SFN |
| XXXXX | 1.12 | Jesse Haines | 24 | SLN |
| XXXXX | 1.11 | Tom Zachary | 33.3 | ATL |
| XXXXX | 1.11 | Wilcy Moore | 32 | BOS |
| XXXXX | 1.04 | Ed Morris | 22.3 | BOS |
| XXXXX | 0.93 | Pat Caraway | 40.3 | CHA |
| XXXXX | 0.91 | Red Lucas | 36 | CIN |
| XXXXX | 0.91 | Wes Ferrell | 42.3 | CLE |
| XXXXX | 0.9 | Earl Whitehill | 49 | DET |
| XXXXX | 0.78 | Eddie Rommel | 19 | OAK |
| XXXXX | 0.74 | George Earnshaw | 31.7 | OAK |
| XXXXX | 0.72 | Heinie Meine | 43 | PIT |
| XXXXX | 0.69 | Clint Brown | 40 | CLE |
| XXXXX | 0.67 | Flint Rhem | 26 | SLN |
_