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Donald Budge (left, American) and Gottfried von Cramm (German) in 1937. John Budge was a champion tennis player who became famous as the first man to win in a single year the four tournaments that compose the Grand Slam of tennis. He was considered to have the best backhand in the history of tennis, at least until the advent of Ken Rosewall in the 1950s and '60s.The Encyclopedia of Tennis page 36.