Not enough days in 1931 season to compile WAA record.
The line graph below shows daily WAA and Batting Average for reference. Fluctuation in batting average decreases as a season progresses. BA for pitchers is batting average against.
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19310510 | -007- | -1.74 | PIT |
| 19310524 | -008- | -1.71 | PIT |
| 19310607 | -018- | -1.71 | PIT |
| 19310621 | -025- | -1.82 | PIT |
| 19310705 | -029- | -1.95 | PIT |
| 19310719 | -039- | -1.97 | PIT |
| 19310802 | -061- | -1.56 | PIT |
| 19310816 | -023- | -2.97 | PIT |
| 19310830 | -026- | -2.94 | PIT |
| 19310913 | -029- | -3.04 | PIT |
| 19310927 | -032- | -2.99 | PIT |
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