Maria Sharapova of Russia reacts during women's singles third round match against Zheng Jie of China at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Maria Sharapova won 2-0. (Xinhua/Gao Jing)

Maria Sharapova of Russia gestures after winning women's singles third round match against Zheng Jie of China at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Maria Sharapova won 2-0. (Xinhua/Gao Jing)

Zheng Jie of China celebrates a score during women's singles third round match against Maria Sharapova of Russia at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Zheng Jie lost 0-2. (Xinhua/Gao Jing)

Zheng Jie of China reacts during women's singles third round match against Maria Sharapova of Russia at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Zheng Jie lost 0-2. (Xinhua/Gao Jing)

Maria Sharapova of Russia celebrates a score during women's singles third round match against Zheng Jie of China at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Maria Sharapova won 2-0. (Xinhua/Gao Jing)

Maria Sharapova of Russia celebrates after winning women's singles third round match against Zheng Jie of China at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Maria Sharapova won 2-0. (Xinhua/Gao Jing)

Zheng Jie of China hits a return to Maria Sharapova of Russia during women's singles third round match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Zheng Jie lost 0-2. (Xinhua/Gao Jing)

Maria Sharapova of Russia hits a return to Zheng Jie of China during women's singles third round match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Maria Sharapova won 2-0. (Xinhua/Gao Jing)

Maria Sharapova of Russia hits a return to Zheng Jie of China during women's singles third round match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Maria Sharapova won 2-0. (Xinhua/Tang Shi)

Zheng Jie of China hits a return to Maria Sharapova of Russia during women's singles third round match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Zheng Jie lost 0-2. (Xinhua/Tang Shi)

Zheng Jie of China hits a return to Maria Sharapova of Russia during women's singles third round match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Zheng Jie lost 0-2. (Xinhua/Tang Shi)

Maria Sharapova of Russia serves to Zheng Jie of China during women's singles third round match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Maria Sharapova won 2-0. (Xinhua/Gao Jing)

Maria Sharapova of Russia hits a return to Zheng Jie of China during women's singles third round match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Maria Sharapova won 2-0. (Xinhua/Gao Jing)

Maria Sharapova of Russia serves to Zheng Jie of China during women's singles third round match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Maria Sharapova won 2-0. (Xinhua/Tang Shi)

Zheng Jie of China hits a return to Maria Sharapova of Russia during women's singles third round match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 1, 2013. Zheng Jie lost 0-2. (Xinhua/Tang Shi)