There were five competitions open to professional tennis players. Luxembourgers have had little success in professional tennis. There are 128, more than any other professional tennis tournament. Graf completely ruled out a return to professional tennis. This is a list of the main career statistics of professional tennis player Rafael Nadal. He was married to professional tennis player Marilyn Greenwood between marriages. Zvereva retired from professional tennis in 2003. This is a list of common nicknames for notable professional tennis players. This is a list of the main career statistics of professional tennis player Steffi Graf. This is a list of the main career statistics of professional tennis player Venus Williams. It is the governing body of men's professional tennis. Wilson is married to former ATP professional tennis player Pete Sampras. Amritraj is married to American professional tennis player Alison Riske. Plaskett is married to Jonathan Buckney Small, a community activist and former professional tennis player. Professional tennis tournaments seed players based on their rankings.