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John McEnroe (born February 16, 1959) is an American retired tennis player. He is from New York City. He is thought of as one of the best tennis players of all time. He was once ranked number 1 in the world. He won three times at Wimbledon and four times at the U.S. Open He is remembered for getting angry at the umpire very easily and his with players such Bjorn Borg. He is probably also famous for his "You cannot be serious!" rant directed to an umpire in 1981 at Wimbledon.
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