Li Na of China hits the ball to the crowd after defeating Flavia Pennetta of Italy during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 21, 2014.(AP Photo/Rick Rycroft)
Li Na of China celebrates after defeating Flavia Pennetta of Italy during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 21, 2014.(AP Photo/Aijaz Rahi)