What type of tennis do Mark Knowles and Andy Ram specialize in?
Mark Knowles 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.
1994 ATP Tour The Association of Tennis Professionals (ATP) Tour is the elite tour for professional tennis organized by the ATP. The ATP Tour includes the Grand Slam tournaments (organized by the International Tennis Federation (ITF)), the ATP Championship Series, Single-Week, the ATP Championship Series, the ATP World Series, the ATP World Team Cup, the Davis Cup (organized by the ITF), the ATP Tour World Championships and the Grand Slam Cup (organized by the ITF).