Novak Djokovic was humbled to join Roy Emerson as the only men to win six Australian Open titles after he beat Andy Murray 6-1, 7-5, 7-6(3) at Melbourne Park on Sunday in a repeat of last year's final. The 28-year-old Serb, whose first grand slam title was at Melbourne Park in 2008, has now won titles on the blue hard courts in 2011, 2012 2013, 2015 and this year to seal the most in the professional era.