Bob Bryan, left, and Mike Bryan of United States hold up the ATP World Tour No 1 doubles team trophy presented to them at the ATP World Tour Finals tennis match at the O2 Arena in London Friday, Nov. 8, 2013. (AP Photo/Sang Tan)

Britain Tennis ATP Finals

Bob Bryan, left, and Mike Bryan of United States hold up the ATP World Tour No 1 doubles team trophy presented to them at the ATP World Tour Finals tennis match at the O2 Arena in London Friday, Nov. 8, 2013. (AP Photo/Sang Tan)

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