His early exit from the tournament means Andy Murray will return to world No. 2 ahead of the Roland Garros tournament
Both players won in straight sets in the Italian capital
Amid concern over his back Federer opted not to risk playing at this week's tournament
Federer has not played since the Australian Open
World No 1 reaches sixth Melbourne final, but the biggest cheers in Rod Laver Arena were for the Swiss maestro's brief and ultimately unsuccessful fightback
The world number one five-time Australian Open winner will face either Andy Murray or Milos Raonic on Sunday
Novak Djokovic beat Kei Nishikori 6-3, 6-2, 6-4
Roger Federer beat Tomas Berdych 7-6, 6-2, 6-4
The 34-year-old Swiss player says that until names are revealed the allegations are merely 'pure speculation'
A full run down of the men's singles first round for the Australian Open
Raonic defeats the 17-times grand slam champion for only the second time in 11 encounters.
Scot to play in Hopman Cup ahead of season’s first Grand Slam event
Genius tennis-playing collides with a personal tale – with mixed results
Reaching the top of the rankings is beyond 'my level' says the humble Swiss
Stanislas Wawrinka victory at the Australian Open signals chinks in strength of 'traditional' top four
The Australian Open has not always brought Rafael Nadal good fortune, but the year’s opening Grand Slam tournament is set to provide him with his latest stepping stone on the route to sporting greatness. If Nadal beats Stanislas Wawrinka in today’s final – and the bookmakers have him as a red-hot favourite to do so – he will move into joint second place on the all-time list of male Grand Slam champions and become the first man in the Open era to win all four of the sport’s major titles twice.