Frederik Løchte Nielsen (born 27 August 1983) is a former professional tennis player. He was the top ranked player from Denmark in the ATP doubles world rankings. A former Wimbledon men's doubles champion, he peaked at no. 17 in the rankings in April 2013. Nielsen has reached five other doubles finals on tour, winning on two occasions. Nielsen's parents were both tennis players and he picked up the sport at the age of three. Having turned professional in 2001, he began competing on the ITF circuit, winning a singles title every year between 2005 and 2010.
https://en.wikipedia.org/wiki/Frederik_Nielsen