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.
Max Decugis Maxime "Max" Omer Mathieu Decugis or Décugis (] ; 24 September 1882 – 6 September 1978) was a male tennis player from France who held the French Championships/French Open record of winning the tournament eight times (a French club members only tournament before 1925), a feat that was surpassed by Rafael Nadal in 2014. He also won three Olympic medals at the 1900 Summer Olympics (Paris) and the 1920 Summer Olympics (Antwerp), his only gold medal coming in the mixed doubles partnering French legend Suzanne Lenglen.