Australia have the ball in the net but it's ruled out for dangerous play. From my very, very, very limited knowledge of playing hockey it's all dangerous isn't it?

Mel Clewlow
Ex-GB hockey player on BBC One

"It's a cracking game for Great Britain to start their Olympic campaign.

"There's a lot of rivalry between the two teams and they have played a six test match series this year and met in the Champions Trophy so they know a lot about each other. 

"It will be interesting to see who gets the upper hand."

The swimming finals get under way in 90 minutes' time - GB have four finalists in action.

Will we see the first British medal of the Games tonight?

We are off and running. Great Britain in all red. 

Swimmer Yulia Efimova has been added to the 271 Russian athletes already eligible to compete at the Olympics.

The 24-year-old appealed to the Court of Arbitration for Sport (Cas) after the International Olympic Committee ruled any Russian athlete who had been sanctioned for doping would be banned.

The 2012 bronze medallist will compete in the 100m and 200m breaststroke.

She was banned for 16 months in 2013 after traces of an anabolic steroid were found in her system.

Efimova does not race tonight but she has been warming up. 

Luke Reddy
BBC Sport in Rio

Image source, .

For the Snapchat users still up, check out the Rio2016 story on there and keep an eye out for BBC contributions.

I'm watching Team GB warm up and it's incredibly impressive. Cross-field passes through the air are plucked out of the sky with a stick, it's like shelling peas.

Jennifer Lopez is blaring out from the speakers, now on to some Beyoncé and Jay-Z action. A real energy in here for what on paper looks a cracker.

USA have beaten Argentina in this group already, over to Australia and Team GB. 

The Ashes of hockey is about to get under way. Classic stuff.

Follow here. 

Watch Germany's Sara Dabritz score an exquisite chip with the outside of her left foot to peg a goal back against Australia in Group F.

Proper drama! Hirome Miyake of Japan failed with her first two attempts at 81kg, and it's Olympics over if she can't lift the third. She gets it up, her knees almost touch the floor but she somehow locks it out.

Superb.

Katinka Hosszu was absolutely flying in qualification for tonight's women's 400m individual medley final (02:49 BST), and Australian Blair Evans reckons she'll break the world record later on.

"Obviously I saw Katinka pass me on the way through, so I know she's going to go fast. She'll break the world record tonight," she said.

"I try to block everyone and swim my own race, but I knew she was there and I knew she was going to go fast."

Image source, EPA

Not long to wait now...

Image source, Getty Images

Joe Cordina impressed in beating Charly Suarez earlier this evening, to progress to the men's lightweight last 16, although one of the judges gave the fight to the Filipino.

Here's what the Welshman had to say after the fight.

"Maybe the crowd influenced the judges a little bit because they were quite noisy, the Filipinos. 

"And then Suarez was showing off a little bit in the last round - I don't why because every time he lunged in with a shot, he was missing so I don't where he was getting all his confidence from.

"Obviously I've got certain attributes and I've got to maximise them. The best thing for me is my feet and my hand speed. 

"In the European qualifier for the Olympic Games earlier this year, nearly the whole team were in the medals and in the final so seeing your team-mates pushing on just makes you want to do it. You don't want to be the one left out."

Image source, Getty Images

Venus Williams is rolling along pretty nicely. Well, she was. After winning the opening set against Kirsten Flipkens, the veteran American has lost her way a little. 

The Belgian has come out swinging at the start of the second set, racing into a 3-0 lead. This one looks to be heading to a decider. Unless Venus pulls a rabbit out of the hat...

'A good day for GB men'published at 00:07 British Summer Time 7 August 2016

00:07 BST 7 August 2016

Gymnastics

Beth Tweddle
BBC Sport gymnastics expert & ex-CWG champion on BBC TV

The British men have had a great start to their competition. We have qualified for the team final, we are just waiting for the last round to finish but that should confirm we have two in the all around, two in the pommel final, maybe one in the floor and hopefully one in the high bars. They've had a good day, made a couple of mistakes that hopefully they can iron out for the finals.

James Cracknell
Double Olympic Rowing gold medalist on BBC TV

The week before the Games started the funding came out and rowing is the best funded sport alongside cycling.

Your funding for the next four years is based on the medals you get here. We predicted between six and eight medals and that will determine funding for the next four years so they have to deliver not only for the money they have received that other good causes could benefit from but also for funding for the next four years. 

British table tennis player Paul Drinkhall is currently doing his thing, up against Aleksandar Karakasevic of Serbia.

Drinkhall was part of the GB team which won bronze at the team worlds in Malaysia earlier this year and went to the People's Republic of China at age 11 to learn how the nation's players approached the game.

Inspired by Forrest Gump? Watch him here. 

Image source, PA

A routine first-half for the all-stars of USA then, as they lead China by 29 points.

Kevin Durant has netted 17 points already for the US, with Kyrie Irving the only player yet to score.

NBA finals stars LeBron James and Steph Curry aren't in Rio incidentally, with both choosing to rest up after their demanding domestic seasons.

Jason Mohammad
BBC Sport in Rio