Mark Knowles (born 4 September 1971) is a former tennis player from the Bahamas, specialising in doubles tennis. He has won a number of Grand Slam tournaments, most notably partnering with Daniel Nestor. At various times between 2002 and 2005 he was ranked World No. 1 in doubles. He is a five-time Olympian.After being awarded a scholarship to the Nick Bollettieri's famed academy, Knowles played three seasons at UCLA, where he earned All-American honours in both singles and doubles. His highest ATP singles ranking was world no. 96. He was very successful in doubles, partnering Daniel Nestor, Mahesh Bhupathi, Brian MacPhie, and Mardy Fish. With Nestor, Knowles won the 2002 Australian Open, the 2004 US Open and the 2007 French Open. He also won the 2009 Wimbledon mixed doubles title with Anna-Lena Grönefeld of Germany. Wikipedia
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