Roger Federer of Switzerland serves the ball to Jo-Wilfried Tsonga of France during their match at the Madrid Masters Series tennis tournament in Madrid Oct. 16, 2008. [Xinhua/Reuters]
![Roger Federer of Switzerland serves the ball to Jo-Wilfried Tsonga of France during their match at the Madrid Masters Series tennis tournament in Madrid Oct. 16, 2008. [Xinhua/Reuters]](http://images.china.cn/attachement/jpg/site1007/20081017/000802c98ccc0a625f3b19.jpg "Roger Federer of Switzerland serves the ball to Jo-Wilfried Tsonga of France during their match at the Madrid Masters Series tennis tournament in Madrid Oct. 16, 2008. [Xinhua/Reuters]")