Serena Williams of the U.S. squats on the court during her quarter-finals match against Serbia's Jelena Jankovic at the Australian Open tennis tournament in Melbourne January 22, 2008. Defending champion Serena Williams slumped out of the Australian Open in a 6-3, 6-4 quarterfinal loss to third-ranked Jelena Jankovic. [[Photo:Sina.com]

Serena Williams of the U.S.?posts on the court during her quarter-finals match against Serbia's Jelena Jankovic at the Australian Open tennis tournament in Melbourne January 22, 2008. Defending champion Serena Williams slumped out of the Australian Open in a 6-3, 6-4 quarterfinal loss to third-ranked Jelena Jankovic. [Photo:Sina.com]

(Xinhua News Agency January 22, 2008)