Had this happen in a league game the other night. It didn't have an effect on the out come but made me curious of the correct rule. Runner on first and batter hits a grounder to 2nd. Second baseman fields the ball and goes toward the runner that is forced to second base to tag him. He stops and goes back towards first. I've always thought if the forced runner retreats to avoid a tag that he is out? Umpire said that it was changed this year? Just curious if there is such a rule. Thanks