Adrian Mannarino, of France, returns to Nikolay Davydenko, of Russia, during the first round at the Sony Open tennis tournament at Key Biscayne, Fla., Wednesday, March 19, 2014. Mannarino won 6-4, 7-5. (AP Photo/Alan Diaz)

Sony Open Tennis

Adrian Mannarino, of France, returns to Nikolay Davydenko, of Russia, during the first round at the Sony Open tennis tournament at Key Biscayne, Fla., Wednesday, March 19, 2014. Mannarino won 6-4, 7-5. (AP Photo/Alan Diaz)

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