Time never stands still in sport, and today's Australian Open final provides confirmation that there is a new headline act in men's tennis. Step aside Roger Federer and Rafael Nadal, step forward Novak Djokovic and Andy Murray. While the 31-year-old Federer nurses his battered pride after losing Friday's semi-final and Nadal nurses his battered knees during his six-month absence from the court, Djokovic and Murray will again take a stage they look set to dominate for years to come.