"The Apple TV+'s rules analyst, former MLB umpire Ben Gorman, explained that a baserunner doesn't have to wait until the ball is caught and called an out. The rule dictates a baserunner can tag up once the opposing team simply makes contact with the baseball.
"The reason behind the touch, as opposed to when he eventually catches the ball, is that an outfielder can actually juggle the ball all the way in and prevent the guy from advancing," Gorman explained. "As soon as the ball hits the glove, he can take off."
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