Which tennis player, Cyril Suk or Christo van Rensburg,  won one Grand Slam men's doubles title and four Grand Slam mixed doubles titles during his career?
Cyril Suk: Cyril Suk III (born 29 January 1967) is a former professional tennis player. Christo van Rensburg: Christo van Rensburg (born 23 October 1962) is a former professional tennis player from South Africa.
i don't know