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Peanut vendor and washed-up baseball player "Coop" Cooper (Dan Dailey) teaches his 9-year-old son, Christy (Billy Chapin), all the game's finer points. When Christy becomes the new bat boy, his suggestions to the players lift the struggling team out of the basement. Owner Fred Whacker (Ray Collins) names Christy the team's head coach as a publicity stunt, changing the lives of everyone, including team secretary Marion Foley (Anne Bancroft) and her third-baseman fiancé (Lloyd Bridges). Wikipedia