Roger Federer of Switzerland returns a shot to Andy Murray of Britain during the men's singles semifinal match at the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Saturday Oct. 13, 2012. (AP Photo/Kin Cheung)

Associated Press
Roger Federer of Switzerland returns a shot to Andy Murray of Britain during the men's singles semifinal match at the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Saturday Oct. 13, 2012. (AP Photo/Kin Cheung)
Roger Federer of Switzerland returns a shot to Andy Murray of Britain during the men's singles semifinal match at the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Saturday Oct. 13, 2012. (AP Photo/Kin Cheung)
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