 Billy Crystal lends his voice several times in the film: 1: The  director yelling "Cut!" when Roger and Mickey try to film a  commercial. 2: The Detroit Tigers 3rd base coach yelling, "Hold Up!  Hold Up!" 3: The TV announcer for Roger and Mickeys commercial.  Billy also appears as a fan in the stands in the scene where Mickey  gets a standing ovation as he starts batting practice on Opening  Day. He can be seen in the upper deck crowd in the front, wearing a  navy blue shirt.