FILE - In this Nov. 15, 2008, file photo, Nikolay Davydenko of Russia celebrates his win over Andy Murray to reach the finals in the 2008 Tennis Masters Cup in Shanghai, China. Former third-ranked player Davydenko has confirmed his retirement from tennis. Davydenko has not played on the ATP tour since the French Open in May and made his announcement on the sidelines of the Kremlin Cup tournament in Moscow on Thursday, Oct. 16, 2014. (AP Photo/Bullit Marquez, File)