Kyle Edmund is back on serve and gets a big round of applause when he starts with a couple of big forehand winners.

A cheeky flick of the wrist on the backhand completely outsmarts Cilic and one big serve later, Edmund has his first hold to love.

A perfect start to the second set.

Jo Durie
Former British number one on BBC Radio 5 live

I'm a bit worried now. Kyle didn't really move for that first point and was there a bit of a hobble after the second?

He's obviously had something done to him off court. If he's had a painkiller that can take 15 minutes to work. He just needs to hang in there until then and hopefully then he'll be OK.

Cilic starts with a banger of a winner, deep in the corner.

A hold to love follows. The Wimbledon finalist is all over Edmund like a pesky rash.

Matt Phillips‏: I’m hoping Edmund’s medical timeout will have the same results as it did when he had one early in R3 - victory in 5. Great to be in Rod Laver for it!

Kyle Edmond is back out, nearly eight minutes since the last point was played.

Marin Cilic will get us back under way.

Piers Newbery
BBC Sport at Melbourne Park

When you contain Edmund to just one forehand winner and three errors in a set, you are on the right track, and that was exactly the kind of authoritative start Cilic would have wanted. Edmund won just 50% of points on his serve, and that is not going to cut it.

Andy Murray is among those to have pointed out in the past that, despite being a big server, Cilic has a very underrated return.

Jo Durie
Former British number one on BBC Radio 5 live

It looks like Cilic is just a bit sharper, his feet are working so fast and the forehand is too. It seems Edmund is just a step slow.

Image source, AFP

Britain's Kyle Edmund has the trainer out and after a quick discussion, the pair have headed backstage for a three-minute medical timeout.

It was actually Marin Cilic who looked a like he was limping during that first set...

Image source, Reuters

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It's first blood to sixth seed Marin Cilic, who takes the first set in 35 minutes.

He does it with a bullet forehand in the corner.

Image source, Reuters

Marin Cilic forces the ball into the net after some aggressive play from Kyle Edmund.

Cilic responds with an overawing forehand winner across the blue court. It's 15-15.

Edmund whips out his first ace. Niiicccceeee. But then he scoops over the baseline for 30-30. Not so nicccceeee.

The Briton sends a forehand over the line and Cilic has a break and set point.

Stephen Fisher‏: Let’s go Kyle Edmund!! @BBCSport live text will be on throughout my 2 PE classes for Reception! These five-year-olds will become experts in game of Tennis by 12 o'clock!

Kyle Edmund pulls an 80mph return out of the locker to make sure he stays in touch on his opponent's serve.

Cilic tries to knock down his biggest serves of the day but he can't get the angle right. On a weaker second serve, Edmund prevails and soon we're up to deuce.

The Croatian takes the advantage and breaths a sigh of relief as Edmund hits over the baseline.

Edmund will serve to stay in the set.

Jo Durie
Former British number one on BBC Radio 5 live

Edmund has worked so hard on his backhand to make it more attacking, especially the shot down the line, and he'll need that today.

A serve out wide from Edmund, and Cilic's response goes spinning out of play.

But Cilic starts to make his move. He's brought up his first chance to break at 15-40.

The first break point goes amiss with a long return, but the net sends Edmund's backhand wide and the sixth seed has the break.

Image source, EPA

Jo Durie
Former British number one on BBC Radio 5 live

Kyle seems to be coping with the circumstances but there have been just a couple of times he's been caught out not getting his racquet back in time because Cilic is hitting the ball so hard.

There's a bit of a delay as a stream of people come looking for their seats while Kyle Edmund is waiting to serve.

They get a glare from the umpire for their troubles.

Phillipa Ashley‏: Have to go to dentist for filling shortly. Will Kyle help ease the pain? Will dentist let me glance at my phone?

Cilic has lift off. The Croatian sixth seed pulls out a trademark ace to finish off the game to love.

Traceyanne Stewart‏: Got tea. Got more tea. And tea. Cited. COME ON KYLE!