Peng Shuai, of China, returns a shot against Vera Zvonareva, of Russia, during a first round match at the BNP Paribas Open tennis tournament, Wednesday, March 5, 2014, in Indian Wells, Calif. (AP Photo/Mark J. Terrill)
Vera Zvonareva, of Russia, returns a shot against Peng Shuai, of China, during a first round match at the BNP Paribas Open tennis tournament, Wednesday, March 5, 2014, in Indian Wells, Calif. (AP Photo/Mark J. Terrill)
Vera Zvonareva, of Russia, returns a shot against Peng Shuai, of China, during a first round match at the BNP Paribas Open tennis tournament, Wednesday, March 5, 2014, in Indian Wells, Calif. (AP Photo/Mark J. Terrill)
China's Peng Shuai returns the ball during a match against Russia's Nadia Petrova on the first day of the WTA Qatar Ladies Open in Doha, Qatar, Monday, Feb. 10, 2014. (AP Photo/Osama Faisal)