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OP generally stands for Opponent. BA, in Baseball, stands for Batting Average.
Thus, OpBA stands for Opponents Batting Average. The lower it is, the better (for the pitcher).
Janiya Hyatt ∙
OP generally stands for Opponent. BA, in baseball, stands for Batting Average. Thus, OpBA stands for Opponents Batting Average. The lower it is, the better (for the pitcher).