Maria Sharapova concedes No. 1 ranking to Serena Williams
Tennis | October 24, 2014 16:52 ISTSingapore: Maria Sharapova failed to advance out of the WTA Finals groups and conceded the year-end No. 1 ranking to Serena Williams despite a three-set victory over Agnieszka Radwanska on Friday. Sharapova needed to win