Ivan Dodig of Croatia talks to the chair umpire during his second round match against Damir Dzumhur of Bosnia and Herzegovina at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 15, 2014. (AP Photo/Aijaz Rahi)
Li Na of China makes a forehand return to Ana Konjuh of Croatia during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 13, 2014.(AP Photo/Rick Rycroft)