Tomas Berdych of the Czech Republic makes a bachand return to Kenny De Schepper of France during their second round match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 15, 2014.(AP Photo/Rick Rycroft)
Li Na of China celebrates her win over Belinda Bencic of Switzerland in their second round match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 15, 2014.(AP Photo/Aaron Favila)
Belinda Bencic of Switzerland makes a backhand return to Li Na of China during their second round match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 15, 2014.(AP Photo/Aaron Favila)
Li Na of China makes a forehand return to Belinda Bencic of Switzerland during their second round match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 15, 2014.(AP Photo/Aaron Favila)
Kenny De Schepper of France makes a backhand return to Tomas Berdych of the Czech Republic during their second round match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 15, 2014.(AP Photo/Rick Rycroft)