Li Na of China plays a return to Barbora Zahlavova Strycova of the Czech Republic during their women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Friday June 27, 2014. (AP Photo/Pavel Golovkin)
France's Kristina Mladenovic reacts as she defeats China's Li Na during the first round match of the French Open tennis tournament at the Roland Garros stadium, in Paris, France, Tuesday, May 27, 2014. (AP Photo/David Vincent)
Chinas Li Na returns the ball to France's Kristina Mladenovic during their first round match of the French Open tennis tournament at the Roland Garros stadium, in Paris, France, Tuesday, May 27, 2014. (AP Photo/David Vincent)
France's Kristina Mladenovic reacts as she defeats China's Li Na during the first round match of the French Open tennis tournament at the Roland Garros stadium, in Paris, France, Tuesday, May 27, 2014. (AP Photo/David Vincent)
France's Kristina Mladenovic reacts as she defeats China's Li Na during the first round match of the French Open tennis tournament at the Roland Garros stadium, in Paris, France, Tuesday, May 27, 2014. (AP Photo/David Vincent)
Chinas Li Na returns the ball to France's Kristina Mladenovic during their first round match of the French Open tennis tournament at the Roland Garros stadium, in Paris, France, Tuesday, May 27, 2014. (AP Photo/David Vincent)
Chinas Li Na returns the ball to France's Kristina Mladenovic during their first round match of the French Open tennis tournament at the Roland Garros stadium, in Paris, France, Tuesday, May 27, 2014. (AP Photo/David Vincent)