The Bill Cosby Show - Season 1 Episode 23 How You Play the Game
Overview: Chet is in the running for the city handball championship. He defeats his semi-final opponent, using psychological tactics. In the final match however, Chet has the tables turned on him and loses the match while being psyched out by his opponent. By losing, Chet teaches a player on the high school football team a lesson in good sportsmanship.