Djokovic wins Australian Open - Sport - ITN.co.uk © Reuters/Mark Blinch Novak Djokovic managed to outlast Rafael Nadal to retain his Australian Open title in a gruelling five-set match that goes into the record books as the longest grand slam final of all time. The world number one won the epic encounter 5-7 6-4 6-2 6-7 (5/7) 7-5 in five hours and 53 minutes, beating the previous record of four hours and 54 minutes set by Ivan Lendl and Mats Wilander at the 1988 US Open. The win in what was also the longest match ever at the Australian Open meant Djokovic became just the fifth man to win three successive grand slam titles following his victories at Wimbledon and the US Open last year.