With the comfort of a double break, Jack Draper is playing with authority now as Mariano Navone begins to show signs of fatigue.

The Briton maintains his momentum and moves to game point with a powerful first serve.

But wait... Navone reminds his opponent he's not completely down and out just yet as he rallies back to deuce.

Russell Fuller
Tennis correspondent on BBC Radio 5 Sports Extra and BBC Sounds

A good start on serve from Novak Djokovic.

Andy Murray hasn't had much to do other than applause fairly enthusiastically. He doesn't look enthusiastic, but he's doing his bit.

Djokovic is moving very, very nicely.

Image source, Getty Images

Basavareddy holds his serve with a powerful forehand at deuce followed up by an ace to seal the deal.

Djokovic also holds comfortably, but Basavareddy is hitting well here. His shots have got a fair bit of power behind them and he is making Djokovic work for the points.

Nick Kyrgios looks like he's enjoying himself out there, interacting with the crowd and laughing at their chants.

He notches up another hold with a powerful ace.

A booming cross-court forehand explodes off the racquet of Mariano Navone as he asserts himself on serve at 40-15, but Jack Draper unleashes a ferocious return down the line to force his way to deuce and the chance to close in on victory.

Superb from Draper!

The crowd are on their feet as the British number one slides in to meet a drop shot and guide the ball back down the line to move a double break ahead. Surely this is his now...

That Jacob Fearnley serve is a real weapon when he gets it right. But when he gets it wrong, it has consequences. A double fault for the Brit at 40-0 gives the Australian a glimmer but Fearnley holds his nerve to take the game at the next opportunity.

This match is being played at quite a tempo. We remain on serve on John Cain as Nick Kyrgios forces Jacob Fearnley long.

A gutsy forehand winner from Jack Draper!

The British number one lands it perfectly to save the second of two break points against him, before wrapping up an impressive hold from 15-40 down to move a step closer to victory. That feels big.

Nick Kyrgios gets himself to 0-30 on the Jacob Fearnley serve but the Brit recovers well to take his first hold of the match. Up and running in his first major tournament.

Despite the attention Mariano Navone required, it's the Argentine who looks livelier as the players return to the court.

A couple of misses from Jack Draper hand over two break points.

Novak Djokovic is just easing into this match, taking the first game very comfortably.

Nishesh Basavareddy has made a couple of unforced errors, but nerves are normal when you're playing against your idol.

Russell Fuller
Tennis correspondent on BBC Radio 5 Sports Extra and BBC Sounds

Andy Murray is sitting down at the back.

He's checking his phone, he's got a notepad and a pen. He's got his game face on.

Andy Murray's coaching career starts here.

Mark Woodforde
17-time Grand Slam doubles champion on BBC Radio 5 Sports Extra and BBC Sounds

I think the biggest hurdle for Jacob Fearnley is going to be the crowd.

Nick Kyrgios is going to draw upon that. He expects them to be 100% behind him.

That's tough for any opponent, and it's still early in the journey for the young Brit.

It looks like Nick Kyrgios is going to be fine after that early mishap but he double-faults again, in the same game, to give Jacob Fearnley a glimmer of hope.

But, he produces a big forehand winner to take the hold and that's that. Kyrgios on the board for the first time in a major tournament since 2022.

Mariano Navone has called for the trainer at the change of ends.

It's not immediately clear what for, or whether the Argentine is squinting because of pain or the fading sunlight.

He's been handed some pickle juice - which is used by athletes to reduce cramping.

Jonathan Jurejko
BBC Sport in Melbourne

Jacob Fearnley isn't just playing Nick Kyrgios tonight. He's playing virtually all of John Cain Arena.

The 23-year-old Scot admits feeling a bit apprehensive.

But he believes learning his trade in the United States college tennis system - known for its "brutal" atmospheres - will stand him in good stead.

"I will try to ignore [the crowd] as best as I can," he said.

"Obviously I've been to some pretty hostile environments. Probably not [in front of] as many people going to be watching on Monday.

"I've definitely had some nasty things thrown in my direction. You just have to ignore it and move on."

A lot of noise around this one. Time to get going. Nick Kyrgios to serve first...

And he begins with a double fault. Oops. Bit rusty.

Here comes Jack Draper!

Mariano Navone makes a series of errors to open the door for the British number one, who bursts straight through it.

A break to love is huge in the context of this match - and it could by a massive psychological blow.

Jonathan Jurejko
BBC Sport in Melbourne

Image source, BBC Sport

This is the moment which Melbourne has been waiting for.

Nick Kyrgios is back playing at the Australian Open.

The noise-o-meter shoots north as the Aussie firebrand walks out and gratefully thanks all sides of the court for their backing.

Not as packed as I’d imagined it would be, actually, and nor the long queues to get into John Cain Arena.

Image source, Getty Images

No shortage of big names getting under way across Melbourne Park right now.

Carlos Alcaraz begins his bid to become the youngest man to complete the career Grand Slam against Kazakhstan's Alexander Shevchenko over on Margaret Court.

The world number three - who has already won two Wimbledon titles, the US Open and the French Open - has never gone beyond the quarter-finals of the Australian Open.

But the Spaniard will be hoping for a turn of fortune at Melbourne Park this time round.