Martin Klizan of Slovakia plays a return to Rafael Nadal of Spain during their first round men's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday, June 24, 2014. (AP Photo/Sang Tan)

Britain Wimbledon Tennis

Martin Klizan of Slovakia plays a return to Rafael Nadal of Spain during their first round men's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday, June 24, 2014. (AP Photo/Sang Tan)

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