Were Mariaan de Swardt and Ken Rosewall both professional tennis players?
Mariaan de Swardt Mariaan de Swardt (born 18 March 1971) is a former tennis player from South Africa, who played as a professional from 1988 to 2001. She twice represented her native country at the Summer Olympics, in 1992 and 1996, and was a member of the South African Fed Cup Team in 1992 and 1994–1997. In 2006, de Swardt became a U.S. citizen.
Debbrich Feys Debbrich Feys (born 20 December 1984, in Ghent) is a retired professional Belgian tennis player. Her career high singles ranking is World No. 341, which she achieved in March 2008. Her highest doubles ranking is No. 178, achieved in February 2008.