Summary: How should base umpires move in a baseball field? Learn how to move as a baseball umpire in the field in this free video on sports officiating.
"Alright, now in this clip I'm going to show you what a base umpire's positions are. There are three positions. The first position is the A position, the A position you stand in foul territory, behind first base. When the ball is hit, you go into play, you set yourself up so that you have a good line, as when the ball and the foot meet the base. He gets a close line in between the base and the ball, he can see the foot hit as the ball comes in, he listens, he can hear the base being hit, he can hear the ball hitting the glove, that's how an umpire could see if he's safe or out. And, that's the best way, by ear and by sight. The base umpire moves into position, if there's a man on first base, he's in his B position, a B position is in between the mound, second base and first base. The reason this is a perfect position, you could see a close place at first base, you could see a steal, balls past, balls going to second base, you turn you could see second base from here and you're still in position for any, any play that's close into second or close back to first. Most times if he goes around first, goes to second, the umpire will run closer to the plate, get as close as he can without interfering with the ball. And, he got a good line act, coming in that slide, coming in and where the tag is made."
eHow Article: Base Umpire Positions