Rafael Nadal of Spain celebrates after defeating Grigor Dimitrov of Bulgaria during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Eugene Hoshiko)
Rafael Nadal of Spain walks off the court after defeating Grigor Dimitrov of Bulgaria in their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Aaron Favila)
Rafael Nadal of Spain walks off the court after defeating Grigor Dimitrov of Bulgaria in their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Aaron Favila)