In baseball statistics , an error is the act , in the judgment of the official scorer , of a fielder misplaying a ball in a manner that allows a batter or baserunner to advance one or more bases or allows an at bat to continue after the batter should have been put out .
In baseball statistics , an error is the act , in the judgment of the official scorer , of a fielder misplaying a ball in a manner that allows a batter or baserunner to reach one or more additional bases , when such an advance would have been prevented given ordinary effort by the fielder .