| Team | Tm | Tier | Game |
|---|---|---|---|
| Philadelphia Athletics | OAK | 3.11 | 193105190_OAK_DET |
| Chicago Cubs | CHN | 2.68 | 193105200_CHN_ATL |
| Brooklyn Robins | LAN | 2.05 | 193105190_SLN_LAN |
| St. Louis Cardinals | SLN | 1.21 | 193105200_SLN_LAN |
| Washington Senators | MIN | 0.96 | 193105210_MIN_CHA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Philadelphia Phillies | PHI | -5.58 | 193105200_PIT_PHI |
| St. Louis Browns | BAL | -3.09 | 193105200_BOS_BAL |
| Cincinnati Reds | CIN | -2.08 | 193105190_CIN_SFN |
| Pittsburgh Pirates | PIT | -1.48 | 193105200_PIT_PHI |
| Detroit Tigers | DET | -0.96 | 193105190_OAK_DET |
Based on accumulated WAA for this season up to 1931-05-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +025+ | 1.67 | Rube Walberg | 66 | OAK |
| +027+ | 1.56 | Jakie May | 18.3 | CHN |
| +033+ | 1.38 | Wilcy Moore | 40.3 | BOS |
| XXXXX | 1.1 | Jim Lindsey | 14 | SLN |
| XXXXX | 1.06 | Pat Malone | 35 | CHN |
| XXXXX | 0.95 | Bill Hallahan | 37 | SLN |
| XXXXX | 0.85 | Ray Benge | 48.3 | PHI |
| XXXXX | 0.8 | Clyde Day | 14.7 | LAN |
| XXXXX | 0.7 | Bruce Cunningham | 20.3 | ATL |
| XXXXX | 0.67 | Paul Derringer | 11.7 | SLN |
| XXXXX | 0.52 | Vic Sorrell | 60.3 | DET |
| XXXXX | 0.47 | Allyn Stout | 5 | SLN |
| XXXXX | 0.47 | Earl Mattingly | 11.3 | LAN |
| XXXXX | 0.41 | Lefty Weinert | 11.7 | NYA |
| XXXXX | 0.36 | Watty Clark | 40.3 | LAN |
| XXXXX | 0.32 | Bill Sherdel | 31.7 | ATL |
| XXXXX | 0.31 | Bill McAfee | 12 | ATL |
| XXXXX | 0.3 | Bob Kline | 14 | BOS |
| XXXXX | 0.28 | Lefty Gomez | 29 | NYA |
| XXXXX | 0.26 | Jack Ogden | 2.7 | CIN |
| XXXXX | 0.24 | Frank Watt | 21 | PHI |
| XXXXX | 0.18 | Fred Heimach | 8.3 | LAN |
| XXXXX | 0.07 | Cy Moore | 5 | LAN |
| XXXXX | 0.04 | Milt Shoffner | 11.3 | CLE |
| XXXXX | 0 | Bobby Burke | 23.7 | MIN |
_