Not enough days in 1921 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 |
|---|---|---|---|
| 19210515 | XXXXX | -0.73 | OAK |
| 19210529 | -025- | -1.41 | OAK |
| 19210612 | -013- | -2.38 | OAK |
| 19210626 | -030- | -1.85 | OAK |
| 19210710 | XXXXX | -1.21 | OAK |
| 19210724 | XXXXX | -0.90 | OAK |
| 19210807 | -030- | -2.10 | OAK |
| 19210821 | -020- | -2.80 | OAK |
| 19210904 | -012- | -3.88 | OAK |
| 19210918 | -011- | -4.07 | OAK |
| 19211002 | -015- | -4.04 | OAK |
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