Kubler with a delightful backhand whipped across court, put away nicely.

But Khachanov showing his mettle here, and not wilting under the noise from the crowd.

Nicely mixed up from Kubler, comes to the net and swats one down the middle to bring up game point.

“Aussie, Aussie, Aussie!” cry the crowd!

Raducanu vs Gauff coming up shortly then...

Andreescu poised to go to a third set if Busca can just hold serve here. Sloane Stephens is up against it, Potapova is serving for the first serve.

While Fucsovics is off to a quick start, leading South Africa's Harry 1-0 with one game apiece in the second.

Khachanov silences the crowd, the 18th seed has a one-set lead over Kubler.

He serves out with supreme confidence, 6-4.

Nadal has been dealing with a hip problem for a few days, but the pain escalated during the match against McDonald.

The Spaniard also confirms he saw out the match due to his desire to not retire as defending champion.

“It’s the left hip. I don’t know what’s going on,” says Nadal.

“If it’s the muscle, if it’s a join. I have history with the hip, I’ve had treatments in the past but it was not like this. Right now it’s difficult to know, but I’ll do the tests.”

Kubler showing some guts to stay in this one, but he must hold serve to avoid a one-set deficit.

There’s a fiery atmosphere on John Cain Arena as Kubler looks to pull back an early deficit to Khachanov. He trails 3-1.

This is some heavy hitting! Khachanov being pushed to the limit as Kubler brings up break point in the fifth game.

Elsewhere, former US Open champion Bianca Andreescu is a set up over Cristina Bucsa, but the Spaniard is a break up in the second.

Andy Murray talked a big game before the Australian Open, insisting he was ready to take on a top player in the opening stages of a grand slam, and then he lived up to his word. In a staggering five-set win over Matteo Berrettini and at the age of 35, Murray produced his best performance and physical display at this level in half a decade. The astonishing drama of his battle with Berrettini may have been staged over almost five hours, but this was a victory of perseverance built over a much longer time, created away from the spotlight where for so long there had only been frustration at the parts of his game that were not clicking together.

When Murray arrived at the Australian Open, more than 2,000 days had passed since his last win over a top-20 opponent at a grand slam, in what was a 2017 French Open quarter-final victory against Kei Nishikori. There had been several admirable efforts in the years since his hip resurfacing surgery, all typified by heart and character but accompanied by grimaces and hobbles, shuffled movement between points and pained expressions. It was, at times, uncomfortable to watch, and as the results struggled to follow it was fair to wonder if it was all worth it.

As Emma Raducanu continues to navigate the tangly pressures of expectation and progress at the Australian Open, she will come face to face with an opponent in Coco Gauff who can relate to her experiences on a level that few can reach. Given their tennis breakthroughs have followed similar trajectories, it is an astonishing boost to the Australian Open that it gets to stage the first ever meeting between Raducanu and Gauff - two of the sport’s most prominent names, let alone teenage stars - on what is only the third day of competition on Wednesday.

They burst onto the scene at Wimbledon at the same stage but two years apart; Gauff with her run to the fourth round as a 15-year-old in 2019, Raducanu to the same point aged 18 in 2021, and then more significantly as she won the US Open as a wildcard two months later. Their worlds changed overnight, and in a way that only a few players on the tour can truly understand. Raducanu and Gauff were held up as future multiple-time grand slam champions, endorsements followed, and the demands to repeat their initial success were not always met with perspective.

We expect Emma Raducanu vs Coco Gauff at 08:00.

It’s been a busy morning in the Australian Open on day three, here’s what you missed:

Women’s top seed Iga Swiatek had too much for Camila Osorio, easing through 6-2 6-3.

Third seed Jessica Pegula joins her, dispatching Aliaksandra Sasnovich 6-2 7-6 (7-5), as does sixth seed Maria Sakkari - just.

She avoided a shock to battle past Russian teenager Diana Shnaider 3-6 7-5 6-3.

But 15th seed Petra Kvitova is out after Anhelina Kalinina pulled off a 7-5 6-4 win.

As well as Rafael Nadal’s stunning loss, as his injury woes returned, sixth seed Felix Auger Aliassime rallied from two down to edge past Alex Molcan 3-6 3-6 6-3 6-2 6-2.

But there were no such problems for Italian 15th seed Jannik Sinner, who cruised through thanks to a 6-3 6-2 6-2 victory over Tomas Etcheverry.

We’re almost ready to go at John Cain Arena.

The 18th seed Karen Khachanov faces a tough one here.

Home favourite Jason Kubler will hope to use home advantage to take down the seed.