Career
Klosova made her first Czechoslovakian team, as an eighteen-year-old, at the 2004 Summer Olympics in Athens, where she competed in the women"s 4 × 100 m freestyle relay, along with her fellow swimmers Jana Myšková, Sandra Kazíková, and Ilona Hlaváčková. Swimming the second leg, Klosova recorded a split of 56.49 seconds, and the Czechoslovakian team went to finish heat one in seventh place, and thirteenth overall, for a total time of 3:46.83. At the 2008 Summer Olympics in Beijing, Klosova competed as an individual swimmer in the 100 m backstroke.
She challenged seven other swimmers in the third heat, including 14-year-old Sarah Sjöström of Sweden, and three-time Olympian Sherry Tsai of Hong Kong.
She raced to sixth place by six tenths of a second (06) behind Mexico"s Fernanda González, with a time of 1:02.76. Klosova failed to advance into the semifinals, as she placed thirty-ninth overall in the preliminaries.