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.
Lany Kaligis Lany Kaligis (born 22 April 1949), sometimes known as Lany Lumanauw, is a former Indonesian professional tennis player. She played at Grand Slam events between 1968 and 1975, in women's singles, women's doubles and mixed doubles.