Do athletes Thomaz Koch and Jack Sock play the same professional sport?
Thomaz Koch Thomaz Koch (born May 11, 1945 in Porto Alegre), is a left-handed former tennis player from Brazil, who was a quarter-finalist at the French Open, Wimbledon and the U.S. National Championships.
Nikolaj Koch-Hansen Nikolaj Koch-Hansen (born 11 March 1986) is a Danish handball player, currently playing for Danish Handball League side FCK Håndbold. He is the younger brother of fellow FCK Handball player Sebastian Koch-Hansen.