Assertion: plate appearance | /r/HasProperty | the denominator
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Source sentences:
text: It is often erroneously cited that total plate appearances is the denominator used in calculating on-base percentage (OBP), an alternative measurement of a player's offensive performance; in reality, the OBP denominator does not include certain plate appearances, such as times reached via either catcher's interference or fielder's obstruction or sacrifice bunts (sacrifice flies are included).