That's a fierce first serve from Marin Cilic, snapping at the frame of Roger Federer's racquet.

But the Swiss takes the next one early with a wicked forehand winner.

Break point.

Image source, EPA

Pat Cash
Former Wimbledon champion on BBC Radio 5 live

The second one was a fantastic pick-up. Cilic is looking up in the air and he doesn't know where his opponent is running to. With the last string of his racquet he finds it.

A long way wide from Marin Cilic off his backhand side, and he's having words with himself after that one.

That's unbelievable from Roger Federer, somehow he keeps the point alive with some returns from deep behind the baseline before Cilic hammers a smash home.

Almost like an exhibition match!

Image source, AFP

Federer holds, just cranking it up a notch when Cilic looked to get some momentum.

David Law
Radio 5 live commentator at Melbourne Park

Maybe, just maybe, Cilic is starting to settle here.

Marin Cilic has found a route back into this final, he wins a long exchange with a smooth backhand across court.

Federer takes note, ups the pressure and slams an ace down to make it 40-15.

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All frame, no game for Roger Federer. He flicks a misjudged forehand into the tramlines.

This time Marin Cilic closes out, coming out on top of a fist-pump worthy backhand exchange.

That's a lovely forehand winner from Cilic, wrong-footing Federer with speed and precision.

Anything you can do... the defending champion nails a backhand down the line that Cilic cannot get anywhere near.

Deuce number five.

Pat Cash
Former Wimbledon champion on BBC Radio 5 live

I've never seen Roger stretch. Really. I don't know if he has a bike in his changing room but he seems to just go straight into his press conference after a match.

He's picked the right parents - he's got genetics on his side!

Image source, Reuters

A delicately sliced backhand from Roger Federer, but it drifts long.

Marin Cilic misses his first serve, throws over a whipping second effort but goes wide with the follow up backhand.

We're back to deuce.

Neeraj Kumar: Cilic looks like he has already played 4 sets.

Jamie: Roger Federer is having a party.

That's right on the whites of the line from Marin Cilic after the Croat challenges an out call on his first serve.

Another zinger from great height hands him the advantage, but the sixth seed wraps it into the net.

Deuce.

Image source, Getty Images

Break point Federer. How quickly this service game has turned around for Marin Cilic, who pops a backhand into the tape.

A shake of the head from Federer, another ground stroke drifts long. He's human after all..

But he rallies back to deuce. Cilic just can't close out the game.

A little bit of frustration from the defending champion? He pops a backhand long and glances towards his box.

Cilic can't pull a backhand from deep on target from the next point - 30-15.

Image source, EPA

Pat Cash
Former Wimbledon champion on BBC Radio 5 live

A great service game to get out of then from Federer.

The second serve is very good. Another one right into the body on the line. They don't have to be fast but they have to be deep to be effective.

Fantastic, that's the shot of a 19-time Grand Slam winner. Under pressure, placing a winner down the line and roaring "come on!".

Federer holds. Ice cool.

Image source, Reuters

Ace. Way to save a first break point, Roger.