Postpublished at 11:04 GMT 28 January 2018
Federer 6-2 6-7 (5-7) 6-3 3-5 Cilic*
Precision from Marin Cilic, sprinting in towards the net to place a volleyed winner on the run.
Roger Federer cracks the tape from behind the baseline and that's 30-0.
Roger Federer wins 2018 Australian Open
Beats Marin Cilic 6-2 6-7 (5-7) 6-3 3-6 6-1
Federer first man to win 20 Grand Slam titles
Swiss also secures record-equalling sixth Australian Open title
Roof was closed - extreme heat policy
Alex Bysouth
Federer 6-2 6-7 (5-7) 6-3 3-5 Cilic*
Precision from Marin Cilic, sprinting in towards the net to place a volleyed winner on the run.
Roger Federer cracks the tape from behind the baseline and that's 30-0.
David Law
Radio 5 live commentator at Melbourne Park
Get this, folks. Roger Federer is actually sweating.
Federer 6-2 6-7 (5-7) 6-3 3-5 Cilic*
Taken!
Superb from Marin Cilic, gliding forward to meet a Federer short ball and slapping it home.
He breaks.
*Federer 6-2 6-7 (5-7) 6-3 3-4 Cilic
It's all out attack from both players now, working each other around the court.
But Federer goes into the tramlines.
Break point.
*Federer 6-2 6-7 (5-7) 6-3 3-4 Cilic
Roger Federer brings up ace number 20 for the Australian Open final, but Marin Cilic responds with a blistering backhand winner.
Deuce number three.
Pat Cash
Former Wimbledon champion on BBC Radio 5 live
The best rally of the match! He went up against Federer and finished it off.
*Federer 6-2 6-7 (5-7) 6-3 3-4 Cilic
A roar from the Rod Laver Arena crowd, Marin Cilic finishes an 18-shot exchange with a superb forehand winner after one of the best rallies of the match.
Deuce.
*Federer 6-2 6-7 (5-7) 6-3 3-4 Cilic
Great depth from Roger Federer, but Marin Cilic coaxes it back only to follow up with a sloppy backhand into the net.
A crosscourt backhand then drifts wide and Federer brings it back to deuce.
David Law
Radio 5 live commentator at Melbourne Park
The serve is starting to deceive Roger Federer here.
From an imperious position, strolling towards Grand Slam number 20, Cilic hits back.
You can almost hear a pin drop as the Federer fans wonder where their hero has gone.
*Federer 6-2 6-7 (5-7) 6-3 3-4 Cilic
Two break points for Marin Cilic.
He's troubling the defending champion.
*Federer 6-2 6-7 (5-7) 6-3 3-4 Cilic
Roger Federer whips a backhand into the middle of the net, and the poker-faced Swiss lets out a little frown.
Marin Cilic is moving well, he scoots across court to force Federer wide and takes the point.
15-30.
*Federer 6-2 6-7 (5-7) 6-3 3-4 Cilic
A big serve to hold after going a break point down for Marin Cilic.
Federer 6-2 6-7 (5-7) 6-3 3-3 Cilic*
Federer lofts it high into the Melbourne sky and asks Cilic a few questions... the sixth seed answers them with a thumping overhead smash.
Advantage Cilic.
Federer 6-2 6-7 (5-7) 6-3 3-3 Cilic*
A disappointing double. Just when Marin Cilic was looking to see this game out without too much trouble. His third of the set.
Federer whips successive one-handed backhands deep, and Cilic catches the tape.
Break point.
Federer 6-2 6-7 (5-7) 6-3 3-3 Cilic*
The tide is with Marin Cilic now, he challenges and gets the call right, before Federer loops a backhand wide.
The Swiss clips the net off a forehand as he backpedals towards his own baseline, and Cilic can't pick it up from deep.
30-15.
#bbctennis
Victoria: I spy a few beads of perspiration...the Federer is indeed human! Must be the excitement of the win he’s about to take!
Pat Cash
Former Wimbledon champion on BBC Radio 5 live
Federer didn't hit the spots in that game.
I'm surprised there weren't more people going 'yes, we want more from this match'.
Federer 6-2 6-7 (5-7) 6-3 3-3 Cilic*
Marin Cilic only needs one!
The Croat breaks for the first time in this match, he's digging in.
*Federer 6-2 6-7 (5-7) 6-3 3-2 Cilic
Well, well, well...
Double fault. And three break points.
*Federer 6-2 6-7 (5-7) 6-3 3-2 Cilic
Roger Federer has won 85% of points off his first serve. Seamless stuff from the Swiss.
Cilic goes aggressive from the defending champion's second serve though and a couple of snappy returns make it 0-30.