Image source, Getty Images

Andy Murray says he could not turn down the "unique opportunity" to coach long-time rival Novak Djokovic at the Australian Open, after retiring from playing professionally in August 2024.

The Briton, who is a three-time Grand Slam champion himself, will be aiming to help Djokovic to a record-extending 11th Australian Open title and a 25th major title.

Speaking about his decision to take on a coaching role, Murray said: "It made sense to trial it and see if it works. And then we said we'd make a more definitive decision after the tournament."

Jonathan Jurejko
BBC Sport in Melbourne

Nick Kyrgios feared he would never be able to play top-level tennis again.

But when he recently returned to action in Brisbane after an 18-month absence, it completed a comeback which even his wrist surgeon doubted was possible.

Kyrgios suffered a full rupture of the scapholunate ligament, which often leaves patients unable to regain normal function even after surgery.

"In the past, our ability to restore such a wrist after such severe injuries has been unreliable - let alone getting someone back to high level sport," Dr Michael Sandow, who is regarded as one of Australia's leading wrist surgeons, told BBC Sport.

"His return to tennis is better than we could have hoped for."

The perfect response by Jack Draper, who gets up and running in the fifth set with a comfortable hold of serve of his own. Both players look locked in.

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Novak Djokovic will be hoping to move one step closer to securing an 11th Australian Open title and a historical 25th Grand Slam title when he comes head-to-head with Nishesh Basavareddy.

The 37-year-old didn't win a major title last season for the first time since 2017, and he also didn't win an ATP title for the first time since 2005.

But the Serbian will certainly be fancying his chances against 19-year-old Basavareddy, who will be making his Grand Slam main draw debut.

Jonathan Jurejko
BBC Sport in Melbourne

The more casual tennis observer among you might be wondering where Jacob Fearnley has come from.

If some rises are rapid, then his progression has been played out in warp speed.

Little over a year ago, the 23-year-old Briton was unranked in the professional tennis world.

Last April, he was still a university student in the United States.

Now he is a top 100 player after winning six ATP Challenger events last year, enabling him to qualify directly for the Australian Open main draw.

Read all about his extraordinary rise here.

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British number three Jacob Fearnley is hoping his experience of playing in some "pretty hostile environments" will prepare him for his blockbuster first-round match against home favourite Nick Kyrgios.

The Briton qualified for the main draw of a major for the first time in his career, after a rapid rise into the world's top 100.

But he will be looking to ignore the noise inside John Cain Arena, after deleting his Instagram because of the number of messages he received after the draw was announced.

It will be Mariano Navone to serve first in the fifth set, as we approach the three-and-a-half hour mark.

The Argentine is making light work of it, too. An ace down the middle settles a love hold.

Jonathan Jurejko
BBC Sport in Melbourne

Welcome back to The Nick Kyrgios Show.

Audiences flock to see the controversial Australian whenever he is in action at Melbourne Park and it is bound to be a chaotic atmosphere as he makes his AO return.

Exactly how Kyrgios wants it.

In today's Herald Sun - Melbourne's main daily newspaper - Kyrgios has a rallying message for the home fans.

'I need you' is the front page headline.

Image source, BBC Sport

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

It's a good fight from Jack Draper.

The mind is very, very willing, even if the body is not so sure.

Image source, Getty Images

Next up on John Cain, Nick Kyrgios will be looking to make waves at Melbourne Park on his Grand Slam return, after claiming that tennis has become "a bit mundane" in his absence.

The former world number 13, who hasn't played at a major tournament since the 2022 US Open, has spent a lengthy spell out with a series of injuries - including a wrist problem which he feared would end his career.

The Australian is carrying an abdominal injury which he says he will take "day by day", with British number three Jacob Fearnley standing in his way of the competition's second round.

Is Jack Draper trying to take over from Andy Murray and ensure we still have our fill of rollercoaster five-set Grand Slam matches?

The 23-year-old is doing his best to contend with his physical fitness and the warm conditions in his Melbourne opener - and twice now he has responded to falling a set down.

It's the British number one who enters the fifth set with the momentum of winning the fourth. Can he now produce a big finish?

We're going the distance!

Mariano Navone again fires long and Jack Draper takes us to a deciding fifth set.

It's anyone's match at this point.

Daniela Hantuchova
Former world number five on BBC Radio 5 Sports Extra

Draper is being quite smart here. He is kind of dictating the rallies now and letting Navone be the one to take charge.

It's almost like he is saying: 'You do something, I'm too tired' - and that is where he is getting the mistakes from the Argentinian.

Jack Draper, serving for the fourth set and to take us to a decider, forces Mariano Navone long and gives himself two set points.

Mariano Navone saves the first break point but sends his backhand long on the next point and there's the break for Jack Draper!

Who saw that coming? He looks pooped.

Now then, the door is ajar for Jack Draper in game eight.

Somehow, he works himself three break points.

Jack Draper looks like he's absolutely out on his feet.

He produces a big ace to take the hold after going down 0-30. He really needed that.

Jack Draper looks perplexed as Mariano Navone takes the hold. The Briton thought the Argentine's forehand had gone out and stands at the back of the court staring at the screen to make sure.

Another hold on the board for Navone.

A brilliant get from Mariano Navone at the net but it's not enough as Jack Draper sends a forehand whizzing past him for deuce.

But for all that work he hands the Argentine another opportunity which he again has to save with a big forehand.

He eventually strings a couple of points together to take the hold. Draper clinging on here.

Daniela Hantuchova
Former world number five on BBC Radio 5 Sports Extra

Jack is struggling big time. He is just trying to hang in this service game, but so many of the choices he is making are because he just wants to finish the points off quickly.

It feels like there isn't much energy left in his tank.