Previously the Opponent’s Batting Average (OBA) or Batting Average Against (BAA) was calculated using the formula documented here: http://en.wikipedia.org/wiki/Batting_average_against
However, I have had feedback from a few teams asking to verify how the calculation was being made. To simplify things we have changed OBA to simply be:
hits / ab
The simple calculation should help clear up any questions on how OBA is being calculated.
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