Kei Nishikori of Japan looks round after slipping on the court while his racquet flies in the air as he plays against Milos Raonic of Canada in their men's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday, July 1, 2014. (AP Photo/Sang Tan)

Britain Wimbledon Tennis

Kei Nishikori of Japan looks round after slipping on the court while his racquet flies in the air as he plays against Milos Raonic of Canada in their men's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday, July 1, 2014. (AP Photo/Sang Tan)

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