| Team | Tm | Tier | Game |
|---|---|---|---|
| Boston Braves | ATL | 2.64 | 193109201_ATL_CIN |
| Brooklyn Robins | LAN | 2.59 | 193109190_LAN_CHN |
| Washington Senators | MIN | 1.71 | 193109201_CHA_MIN |
| New York Giants | SFN | 0.77 | 193109201_SFN_CHN |
| Detroit Tigers | DET | 0.63 | 193109211_DET_OAK |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago White Sox | CHA | -3.8 | 193109191_CHA_OAK |
| Philadelphia Phillies | PHI | -3.22 | 193109191_PHI_CIN |
| St. Louis Browns | BAL | -1.3 | 193109211_BAL_BOS |
| Detroit Tigers | DET | -0.4 | 193109190_DET_MIN |
| Cincinnati Reds | CIN | -0.35 | 193109210_ATL_CIN |
Based on accumulated WAA for this season up to 1931-09-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +023+ | 5.44 | Tom Zachary | 219.7 | ATL |
| +026+ | 5.05 | Ray Benge | 238 | PHI |
| +044+ | 3.86 | Firpo Marberry | 214.7 | MIN |
| +051+ | 3.46 | Glenn Spencer | 180 | PIT |
| +062+ | 2.63 | Jack Ogden | 89 | CIN |
| +064+ | 2.6 | Paul Derringer | 192.7 | SLN |
| +072+ | 2.4 | George Uhle | 191.3 | DET |
| +086+ | 2.07 | Fred Heimach | 135.3 | LAN |
| +103+ | 1.49 | Phil Collins | 236 | PHI |
| XXXXX | 0.9 | Tiny Chaplin | 42.3 | SFN |
| XXXXX | 0.57 | Jack Berly | 111.3 | SFN |
| XXXXX | 0.49 | Ed Baecht | 67 | CHN |
| XXXXX | 0.46 | Cy Moore | 61.7 | LAN |
| XXXXX | 0.39 | Whitey Hilcher | 4 | CIN |
| XXXXX | 0.26 | Johnny Welch | 33.7 | CHN |
| XXXXX | 0.19 | Fred Frankhouse | 127.3 | ATL |
| XXXXX | 0.15 | Clarence Mitchell | 190.3 | SFN |
| XXXXX | 0.08 | Steve Swetonic | 27.3 | PIT |
| XXXXX | -0.22 | Allyn Stout | 72.7 | SLN |
| XXXXX | -0.46 | Grant Bowler | 26.3 | CHA |
| XXXXX | -0.5 | Bill Sherdel | 137.7 | ATL |
| XXXXX | -0.53 | Hal Haid | 56 | ATL |
| XXXXX | -0.59 | Clyde Day | 57.3 | LAN |
| XXXXX | -0.62 | Chad Kimsey | 93.3 | BAL |
| XXXXX | -0.66 | Bob Brown | 6.3 | ATL |
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