As a high school umpire for over 35 years, I can unequivocally say that was an easy call to make, and the correct call. The box on the first base line that starts at 45 feet is the runners lane. The runner must have a least on foot on the foul line to be considered in that lane. The Maryland batter/runner clearly had both feet inside the foul line in fair territory and that altered the throw to the first baseman. The fact that the batter/runner collided with the first baseman has absolutely nothing to do with it. It is where the feet of the batter/runner are in running up the line. Dead ball, batter/runner out, all runners return. Easy call. The announcers sounded like they had absolutely no clue about this rule. The color commentator actually said, "I don't understand it". SMH. Plus, I think they missed it, but I believe Alleyne, the Maryland bater/runner was ejected by the home plate umpire.