Hello and welcome to the second men's semi-finals between second seed Roger Federer, five-times former champion in Melbourne, and third seed Andy Murray, reigning US Open champion

MURRAY 6-4 6-6 - It's tie-break time. Murray runs through another comfortable service hold to force the breaker as an end to this second set

MURRAY 6-4 5-6 - Federer leads once again after a huge service hold, in which he flung down a couple of unreturnable serves before sealing the game with an ace. Murray will have to serve to stay in this set for a second time after the change of ends

MURRAY 6-4 5-5 - Murray ends another lengthy rally with a huge backhand winner that he lands right on the outside of the sideline. And sure enough the Scot does hold to 15 when Federer puts a backhand just marginally long of the baseline - it takes a hawkeye challenge to confirm the call

MURRAY 6-4 4-5 - Murray is beginning to look a little frustrated with Federer as the world number two holds to 15 once again to leave the Scot serving to stay in the set after the change of ends

MURRAY 6-4 4-4 - Murray races through a love service hold, scrampering across the baseline and rattling a forehand winner down the line to seal the game

MURRAY 6-4 3-4 - Fantastic reach from both players up at the net ends when Murray flicks his wrist at a forehand volley and somehow finds a cross court winner. But it is Murray's only point of the game as Federer eases through another hold to sneak ahead once again

MURRAY 6-4 3-3 - A great sliced backhand approach from Murray does the trick as Federer puts his backhand passing shot attempt into the net and wastes the opportunity to earn himself a break point. And another huge serve, an ace in fact, seals the game for Murray. Murray's first serve percentage for the match is 71 per cent. And he wins 69 per cent of points behind that first serve.

MURRAY 6-4 2-3 - Murray puts an easily makeable cross court forehand into the net to waste the opportunity to set up three more break points. A backhand sliced long on the next point from the Scot allows Federer to level up at 30-30 before a beautifully timed backhand from Federer helps end another 16-stroke rally when Murray hits into the net. Federer slices a backhand into the net to allow Murray to level at deuce but then goes on to hold with consecutive unreturnables

MURRAY 6-4 2-2 - A 16-shot rally ends in with a vintage Federer backhand down the line that Murray cannot return in play. But he puts an almost identical shot wide on the next point to help Murray set up two game points. And the Scot only needs the one, a big first serve doing the damage as Federer puts his attempted passing shot into the net

MURRAY 6-4 1-2 - Federer finally finds his first ace of the match, to seal a hold to 15 of his own, and remain just out in front in this second set

MURRAY 6-4 1-1 - A 206kph serve down the centre of the court from Murray brings him to to six aces already, equalling the total number aces he hit in his entire semi-final against Jeremy Chardy. And ace number seven, this time out wide, seals a hold to 15

MURRAY 6-4 0-1 - A huge hold for Federer as he takes the opening game of the second set. Murray pushes him to deuce before the world number two bounces back with a huge first serve and then by finally dictating the play from the baseline for a change and eventually drawing the error from the Scot, a forehand into the net

In eight of the last nine times these two have faced each other, the man who has won the first set has gone on to win the match. The only occasion on which that was not the case was in the Wimbledon final last year when Murray won the first set before Federer bounced back to win the match in four

MURRAY 6-4 - SET! Murray unleashes a forehand down the line, after running round the ball. Federer can only put his reply into the bottom of the net and Murray has two set points. Only one is needed though, Murray producing a big first serve and bigger forehand that again Federer can only put into the net. First set to the Scot.

MURRAY 5-4 - Much better again from Federer as he holds without any drama this time around to force Murray to serve out the set after the change of ends. A big first serve down the centre of the T seals the game for Fed when Murray puts his return into the top of the net

MURRAY 5-3 - A love service game from Murray is sealed by the Scot with a cross court backhand that Fed can only return into the net down the line, also on the backhand. Federer will have to serve to stay in this opening set

MURRAY 4-3 - Federer hangs on t as he comes up with an unreturnable serve and a solid enough serve, that Murray can only return into the net, to hold

A flicked cross court forehand from Murray stretches Federer as he comes into the net. The world number two does well to get the forehand back down the line but Murray is there easily and riffles his backhand passing shot winner down the line to bring up two more break points. Federer saves the first after another trip into the net. And then also the second with a backhand smash that Murray does brilliantly well to get to let alone get the ball back down the line. It lands just wide though..

MURRAY 4-2 - Murray backs away and backs away from a cross court backhand of Federer's to thump the forehand winner down the line. He goes on to earn himself two game points with another ace, this time down the centre of the court. Although the first goes begging with a cross court backhand that drops just a milimetre wide (shown by hawkeye), he holds once again at the second attempt when Federer puts a backhand return into the net.

MURRAY 3-2 - Much better from Federer on serve this time around as he holds to love when Murray hits an off-balance forehand into the bottom of the net. Not only was that Federer's first love service hold but it was also the first service game of his without break points.

MURRAY 3-1 - A 213kph ace across court from Murray saves it before he gets incredibly lucky after a lob from Federer drops just marginally wide. Federer prevents Murray from holding with a great forehand return, after running around the ball. But a huge serve out wide from Murray, followed by an emphatic forehand smash, sets up another game point. And this time he secures the hold when Federer slices his backhand return long of the baseline