Who is older, Bob Bryan or Mariaan de Swardt?
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.
Hans van Swol Albertus Christiaan "Hans" van Swol (] ; 22 August 1914 – 20 May 2010) was a Dutch tennis player. He was five-fold Dutch singles champion (1938, 1940, 1941, 1948 and 1949). He reached the fourth round at Wimbledon on five different occasions (1946, 1948–1951) but never made it to the quarter finals stage. He reached the third round of the French Championships at Roland-Garros in 1937.