Are Jan Kodeš and Nenad Zimonjić both tennis players?
Jan Kodeš Jan Kodeš (born 1 March 1946) is a right-handed Czech former tennis player who won three Grand Slam singles events in the early 1970s.
Jan Hájek (tennis) Jan Hájek (born 7 August 1983) is a retired male professional tennis player from the Czech Republic. He reached the third round of the 2007 French Open and attained a career-high ATP singles ranking of World No. 71 in November 2006.