Rafael Nadal of Spain reacts as he plays Tim Smyczek of the U.S. during their second round match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 21, 2015. (AP Photo/Rob Griffith)
Rafael Nadal of Spain makes a backhand return to Dudi Sela of Israel during their third round match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 23, 2015. (AP Photo/Bernat Armangue)