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.
David Ekerot David Ekerot (born 1 February 1970 in Lund, Sweden) is a former professional tennis player from Sweden. He enjoyed most of his tennis success while playing doubles. During his career he won 2 doubles titles. He achieved a career-high doubles ranking of World No. 52 in 1997.