Li Na of China reacts during the quarterfinal of women's singles against Agnieszka Radwanska of Poland on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua

 

Li Na of China reacts during the quarterfinal of women's singles against Agnieszka Radwanska of Poland on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua

 

Li Na of China returns the ball during the quarterfinal of women's singles against Agnieszka Radwanska of Poland on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua

 

Li Na of China reacts during the quarterfinal of women's singles against Agnieszka Radwanska of Poland on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua

 

Li Na (L) of China greets Agnieszka Radwanska of Poland after the quarterfinal of women's singles on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua

 

Agnieszka Radwanska of Poland returns the ball during the quarterfinal of women's singles against Li Na of China on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Agnieszka Radwanska won 2-1. Photo: Xinhua

 

Agnieszka Radwanska of Poland celebrates for victory after the quarterfinal of women's singles against Li Na of China on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Agnieszka Radwanska won 2-1. Photo: Xinhua

 

Li Na of China reacts during the quarterfinal of women's singles against Agnieszka Radwanska of Poland on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua

 

Agnieszka Radwanska (R) of Poland greets Li Na of China after their quarterfinal of women's singles on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Agnieszka Radwanska won 2-1. Photo: Xinhua

 

Agnieszka Radwanska of Poland greets the audience after the quarterfinal of women's singles against Li Na of China on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Agnieszka Radwanska won 2-1. Photo: Xinhua

 

Agnieszka Radwanska of Poland returns the ball during the quarterfinal of women's singles against Li Na of China on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Agnieszka Radwanska won 2-1. Photo: Xinhua

 

Agnieszka Radwanska of Poland returns the ball during the quarterfinal of women's singles against Li Na of China on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Agnieszka Radwanska won 2-1. Photo: Xinhua

 

Agnieszka Radwanska (L) of Poland reacts after the quarterfinal of women's singles against Li Na of China on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Agnieszka Radwanska won 2-1. Photo: Xinhua

 

Agnieszka Radwanska of Poland returns the ball during the quarterfinal of women's singles against Li Na of China on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Agnieszka Radwanska won 2-1. Photo: Xinhua

 

Agnieszka Radwanska of Poland returns the ball during the quarterfinal of women's singles against Li Na of China on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Agnieszka Radwanska won 2-1. Photo: Xinhua

 

Li Na of China returns the ball during the quarterfinal of women's singles against Agnieszka Radwanska of Poland on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua

 

Li Na of China reacts during the quarterfinal of women's singles against Agnieszka Radwanska of Poland on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua

 

This combo photo shows Li Na of China reacts as she leaves the court after the quarterfinal of women's singles against Agnieszka Radwanska of Poland on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua

 

Li Na of China returns the ball during the quarterfinal of women's singles against Agnieszka Radwanska of Poland on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua

 

Li Na of China returns the ball during the quarterfinal of women's singles against Agnieszka Radwanska of Poland on day 8 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain on July 2, 2013. Li Na lost 1-2. Photo: Xinhua