Opponent batting average
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In baseball statistics, opponents' batting average (denoted by O-AVG or O-BA), also referred to as batting average against (BAA) is a statistic that measures a pitcher's ability to prevent hits during official at bats. It is calculated as: Hits Allowed divided by (Batters Faced minus Walks minus Hit Batsmen minus Sacrifice Hits minus Sacrifice Flies minus Catcher's Interference).[1]
