| Starter | Tm | Tier | Game |
|---|---|---|---|
| Burleigh Grimes | SLN | 7.44 | 193105290_CIN_SLN |
| Lefty Stewart | BAL | 3.46 | 193105280_BAL_CLE |
| Pat Malone | CHN | 3.18 | 193105290_CHN_PIT |
| Freddie Fitzsimmons | SFN | 2.96 | 193105280_ATL_SFN |
| Dazzy Vance | LAN | 2.64 | 193105290_LAN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Biff Wysong | CIN | -1.12 | 193105270_CHN_CIN |
| Phil Collins | PHI | -1.05 | 193105290_ATL_PHI |
| Vic Frazier | CHA | -0.51 | 193105271_DET_CHA |
| Guy Bush | CHN | -0.46 | 193105270_CHN_CIN |
| Vic Sorrell | DET | -0.29 | 193105280_DET_CHA |
Based on accumulated WAA for this season up to 1931-05-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.83 | Pat Caraway | 85.3 | CHA |
| +006+ | 3.19 | Bill Walker | 52 | SFN |
| +008+ | 3.14 | Lefty Grove | 63.3 | OAK |
| +009+ | 3.06 | Ed Brandt | 69.3 | ATL |
| +011+ | 2.87 | Freddie Fitzsimmons | 71 | SFN |
| +014+ | 2.59 | Lloyd Brown | 86 | MIN |
| +017+ | 2.4 | Heinie Meine | 76 | PIT |
| +020+ | 2.05 | Burleigh Grimes | 61 | SLN |
| +022+ | 1.9 | Jack Berly | 36 | SFN |
| +023+ | 1.81 | Tom Zachary | 46 | ATL |
| +024+ | 1.79 | Rube Walberg | 82 | OAK |
| +026+ | 1.61 | Si Johnson | 65.7 | CIN |
| +031+ | 1.49 | Clarence Mitchell | 63 | SFN |
| +032+ | 1.43 | Earl Whitehill | 77 | DET |
| +033+ | 1.42 | Dazzy Vance | 49 | LAN |
| +034+ | 1.39 | Wilcy Moore | 46.3 | BOS |
| +035+ | 1.29 | Charlie Root | 56.7 | CHN |
| XXXXX | 1.21 | Jesse Haines | 39 | SLN |
| XXXXX | 1.21 | Socks Seibold | 57 | ATL |
| XXXXX | 1.19 | Bruce Cunningham | 33.3 | ATL |
| XXXXX | 1.13 | Syl Johnson | 36 | SLN |
| XXXXX | 1.12 | Eddie Rommel | 31.3 | OAK |
| XXXXX | 1.11 | George Uhle | 39.3 | DET |
| XXXXX | 1.09 | Ray Benge | 57 | PHI |
| XXXXX | 1 | Ed Morris | 27.3 | BOS |
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