China's Lin Dan reacts during the men's singles third round match against Kazumasa Sakai of Japan at the Badminton Asia Championships in Taipei, southeast China's Taiwan, on April 18, 2013. Lin won 2-1.

China's Lin Dan hits a return during the men's singles third round match against Kazumasa Sakai of Japan at the Badminton Asia Championships in Taipei, southeast China's Taiwan, on April 18, 2013. Lin won 2-1.

China's Lin Dan reacts during the men's singles third round match against Kazumasa Sakai of Japan at the Badminton Asia Championships in Taipei, southeast China's Taiwan, on April 18, 2013. Lin won 2-1.

China's Lin Dan hits a return during the men's singles third round match against Kazumasa Sakai of Japan at the Badminton Asia Championships in Taipei, southeast China's Taiwan, on April 18, 2013. Lin won 2-1.

China's Du Pengyu hits a return against Daren Liew of Malaysia during the men's singles third round match at the Badminton Asia Championships in Taipei, southeast China's Taiwan, on April 18, 2013. Du won 2-0.