When I was calling games a very good veteran umpire taught me many things, Two of the most important were, 1). when calling a game, half the people are going to think you are wrong, so don't get rabbit eared over it and 2). When you make your call, always act as if you are right and you know it. If you want to admit to a coach you may have missed it, do it after the game not while he is on the field in your ass..