Which tennis player has retired, Hank Pfister or Maria Sharapova?
Hank Pfister Hank Pfister (born October 9, 1953) is a former tennis player from the United States, who won two singles titles (1981, Maui and 1982, Newport) during his professional career. The right-hander reached his highest individual ranking on the ATP Tour on May 2, 1983, when he became World No. 19.
Henin–S. Williams rivalry Tennis players Justine Henin from Belgium, former world No. 1, and Serena Williams from the USA, current World No. 1,