Novak Djokovic again gives himself a bit of breathing space with a hold to 15, sealed with an ace.

Tomas Machac is running out of time to make inroads on the Djokovic serve.

Aleksander Vukic is ranked 50 places below Jack Draper so anything but a win for the British number one will be an upset.

So far, so good for the Australian. Another easy-peasy love hold.

Ryan Harrison
Former American tennis player on BBC Radio 5 Live and BBC Sounds

Once the adrenaline kicks in, a lot of the time you can find it will eventually set off some fatigue. You cannot just play off adrenaline the entire time, but early on here Jack Draper is just going to have to find a bit of a balance.

You never know exactly how long it is going to take, but if he's able to just get a little bit of a positive fire going then I think that will help overcome some of that early on fatigue.

Image source, Reuters

Tomas Machac gets on the board in set three with a hold to 15.

There was a brilliant flying forehand thrown in there where Machac must've been at least a couple of feet off the ground when he pumped it past Novak Djokovic.

Ryan Harrison
Former American tennis player on BBC Radio 5 Live and BBC Sounds

A few double faults creeping in from Tomas Machac early on in this third set.

When you have an opponent who is playing great but is struggling physically, the last thing you want to do is just donate a break with them not even having much to do.

It is going to make Novak Djokovic feel like he's got an opportunity to bury this thing now.

That's more like it from Jack Draper as he fires down an ace for a 40-30 lead.

The British number one has had no time at all to get any sort of rhythm to his game yet, but he whips a forehand down the line and gets himself on the board.

More from match-winner Coco Gauff on managing to stay humble and focused on her tennis after her rise to fame: "I definitely think my community has helped me. I grew up in Delray Beach and I have been involved in volunteering in my community. I also grew up in the church, so when you have a community like that you have no choice but to keep your grounding.

"The people that I meet every single day make me realise that tennis feels like such high stakes but it's really not. I'm so lucky to be able to do what I do, get paid well by doing it and be able to use my platform to give back to others. I'm very grateful.

"The biggest thing I learned last year was to not take anything for granted and just realise that this time is going to go by so fast. Hopefully it doesn't feel like it in the moment, but I'm sure 20 years on from now I'll be wishing I could sometimes go back. I'm just trying to enjoy it whilst I'm here."

Image source, Getty Images

Many had predicted this would be a really competitive match and, at times, it has been, but Novak Djokovic is in the mood to get this done now and takes the hold to love with a powerful ace to consolidate that break.

Jonathan Jurejko
BBC Sport in Melbourne

For the second round running Jack Draper faces the player and the crowd.

The Aussies fans aren't as feral on Margaret Court Arena as they are over on John Cain Arena - but they've already let the Brit know he'll be getting stick tonight.

There were a smattering of boos when he walked out on court and missed first serves are already being cheered.

A wonder start for Aleksandar Vukic as he races through a love hold in just 70 seconds to back up the break.

What about that for a start as the Australian attacks Jack Draper's serve. That will only help Aleksandar Vukic get his home crowd behind him even more.

Ouch. Another double fault and Tomas Machac concedes the break in his opening service game of set three.

Aleksander Vukic is on the offence and quick to let Jack Draper he's not in for an easy ride.

The Australian has got himself an early chance to break as Draper goes long.

Not a good start for Tomas Machac who double faults to gift Novak Djokovic two break points.

Novak Djokovic returns to court after that short break.

Bathroom break? Quick snack? Assessment from the doc? A stern word in the mirror?

Who knows. We're under way in set three.

Here we go then. Can Jack Draper make it to the fourth round?

The British number one serves first against Aleksander Vukic to get us under way.

*denotes next server.

Coco Gauff speaking on court about playing Leylah Fernandez just a couple of weeks ago at the United Cup: "I think it was harder to play against her this time because she knows what to expect. I definitely think that she played a bit differently today than she did at the United Cup, so I definitely think it's harder because you are trying to change up what you did last time. Leylah is a great competitor, a great player, a great person so I knew it was going to be a tough match regardless of the result a couple of weeks ago."

On her coaching team still sitting in the old player boxes and not the new courtside pods: "I told them that I was happy with whatever they wanted to do. My theory is that at the United Cup, JC was on the bench and maybe he didn't like that experience so he chose to go in the box.

"It's their decision. I'm a player that doesn't like to hear too much but I do put my towel over there so they know that if they need to tell me something then I'm there to listen. Overall, I think less is more and they prepare me a lot before the match so when I'm out here I can just play."

Image source, Getty Images

There were concerns over Jack Draper's fitness coming into this year's Australian Open, with the 22-year-old having a disrupted build-up because of a hip injury.

There were also memories of Draper being sick immediately after his first-round victory at Melbourne Park last year - something he later put down to the "psychological stress" of the situation.

He struggled with the same issue in his first major semi-final at the US Open, vomiting three times on court before his defeat by eventual champion Jannik Sinner.

But so far, so good this year. The British number one has come through two mammoth five-set matches and showcased his increasing durability.

"It's a huge step forward. I've been working physically a lot for a long time," said Draper after his second-round win.

"When people say 'you're not fit enough' and all of this sort of stuff, it's a part of it.

"It's been really difficult the last few years with question marks over long matches."

Seven began, and two remain.

After Jacob Fearnley's defeat earlier, there are two British players left in the singles at the Australian Open.

Jack Draperwill take on Aleksandar Vukic very shortly.

And Emma Raducanu will face five-time Grand Slam champion Iga Swiatek at 00:30 GMT on Saturday.

Image source, Getty Images

That's how you seal the set!

Novak Djokovic finds a perfect ace to put himself in control of this match.

It looks like Djokovic is going to take some time off court after that second set. He's playing well but clearly still uncomfortable out there.