Mark Knowles

Mark Knowles (born 4 September 1971) is a Bahamian former professional tennis player and coach. He is a former world No. 1 in doubles. He won three of the four Grand Slam tournaments in men's doubles, partnering with Daniel Nestor of Canada, as well as Wimbledon in mixed doubles with Anna-Lena Grönefeld of Germany. At various times between 2002 and 2005 he was ranked World No. 1 in doubles. He is a five-time Olympian.