The ever-cool Roger Federer, looking resplendent in white with green stripes, leads Nikoloz Basilashvili 2-1 and home star Nick Kyrgios is also up in his match, 2-1 v Pablo Carreno Busta.

Latest men's scores and latest women's scores

"Come on!" yelps Timea Babos as she wipes out that early Heather Watson break.

Better from the Hungarian as her power forces Watson on to the back foot, unable to stave off the seemingly-inevitable as Babos racks up three break points.

Babos survives the second break point of game four, battling back with a backhand volley to force deuce. The Hungarian, who is ranked 60th in the world, completes the escape to hold.

The broad-shouldered Babos likes to give the ball a good old thwack from the baseline - but she's meeting her match in Watson. The Briton levels 30-30 on Babos's serve with a sumptuous passsing backhand from deep. Smooth as silk.

Babos goes wide to hand Watson another break point - and then laces her first serve wide of the mark. 

A rare unforced error from Watson lets her off the hook but then outlasts her opponent in a rally to earn a second break point... 

* denotes next server

Gigi Salmon
BBC Radio 5 live sports extra commentator

"I think the rise of Johanna Konta and the rivalry with Watson to be the highest-ranked Briton is pushing them both onwards and upwards."

Impressive stuff from Heather Watson. She is skipping down easy street now, wrapping up her service game when Timea Babos fails to hit the target with a lame forehand.

Early breakthrough for Heather Watson! The British number two asks plenty of questions of her Hungarian opponent, brushing off that uncomfortable hold behind her. 

Two break points go begging...but it is third time lucky for the Guernsey girl! A beautiful backhand lands at Babos' feet and she can't dig it out of the court.

There are more sub-plots than an EastEnders Christmas special at Melbourne Park. While Heather Watson stares back down at Timea Babos' serve for the first time today, some other big names are strolling on to court.

Roger Federer, Maria Sharapova and home favourite Nick Kyrgios are all starting their Aussie Open campaigns elsewhere - we will be bringing you all the juicy bits from those matches as they happen.

Heather Watson can't shake off Timea Babos in this opening game. The Hungarian is like that annoying fly that Watto can't brush off. She grabs a second break point, but the Briton survives and eventually turns the game back in her favour to hold. Just the eight-minute game to open up....

Watson slams down a couple of hefty serves to race into a 30-0 lead. But, wait! The opening game isn't as comfortable a hold as we first thought. Babos battles back to win an early break point...

David's right - it really is glorious in Melbourne. The shadows on court eight at Melbourne Park are lengthening however, as Watson serves first...

*denotes next serve

David Law
BBC Radio 5 live sports extra commentator

"It a slightly unsettling period of Heather Watson's career because her coach Diego Veronelli seemed a good fit. He's left to spend more time with his family and Judy Murray has come in and is someone she knows very well.

"The weather is glorious - this is a nice time to play. It is a lot cooler than it was earlier."

Watson knows Babos very well, having come through the youth ranks at similar times and also played junior doubles together. The Hungarian won their last encounter, but Watto sneaks their head-to-head record 2-1.

Heather Watson is out of a sun-filled court eight, limbering up ahead of her first-round match against Hungary's Timea Babos.

Watson is looking very summery, wearing a bright orange top and black trainers with a flash of matching colour.

Uruguay's Pablo Cuevas is just a break of serve away from sending Yoshihito Nishioka on the next flight back to Japan.

So what, I hear you say?! Because Britain's Heather Watson will be heading out of the locker room shortly after that match finishes.

Matt Dick: So the BBC reveal match fixing in Tennis including at Wimbledon. No sport is sacred now, real shame.

Young Kazakh player Yulia Putintseva is known as one of the most emotional players on the tour, often wearing her heart on her sleeve. So it is no surprise to hear that she struggled to contain her excitement as she edged towards beating 16th-side Caroline Wozniacki...