Li Na of China plays a shot return to Lucie Safarova of the Czech Republic during their third round match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Rick Rycroft)
Li Na of China makes a forehand return to Lucie Safarova of the Czech Republic during their third round match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Rick Rycroft)
Li Na of China hits a backhand return to Lucie Safarova of the Czech Republic during their third round match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Rick Rycroft)
Lucie Safarova of the Czech Republic hits a backhand return to Li Na of China during their third round match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Rick Rycroft)
Li Na of China appeals a point as she plays Lucie Safarova of the Czech Republic during their third round match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Rick Rycroft)