MELBOURNE, Australia (AP) — If anyone knows how Novak Djokovic feels after sweating and scrapping for almost five hours in the Australian Open semifinals, it's his next opponent — Rafael Nadal. A day after Nadal beat Roger Federer in four compelling sets, Djokovic dug deep to overcome Andy Murray 6-3, 3-6, 6-7 (4), 6-1, 7-5 on Friday night after 4 hours, 50 minutes. Defending champion Djokovic will face Nadal in a third straight Grand Slam final on Sunday.