The Laver–Rosewall rivalry was a tennis rivalry in the 1960s and 1970s between Rod Laver and Ken Rosewall, widely regarded as two of the greatest tennis players of all time. In 1956 both players toured in the amateur circuit but never faced each other. Rosewall turned professional in January 1957 and the two did not meet until January 1963 when Laver turned pro. They played many times until 1977 when both semi-retired from the main tour.