Alistair Magowan
BBC Sport in Rio

Image source, BBC Sport

So an eventful first day at the rowing as the stands empty at Lagoa: 

• One sunken boat amid choppy conditions (Serbia will get another chance in the repechage)
• A decent day for the Great Britain team, although there is work to do for the newly-formed men's quad
• This Dutch supporter insisted on wearing this suit despite the boiling temperatures
• And Christ the redeemer enjoyed the fun. (We assume)

Becky is right you know. The swimming is on the telly box. Adam Peaty goes in the men's 100m breatstroke heats, which start at 19:02 BST.

You can also watch by using the video at the top of this page.

Image source, .

Everything's starting to bunch up. In fact, there's a lovely camera shot showing the chase group within sight of the peloton.

Geraint Thomas is in that chase group and he has Team Sky team-mate Sergio Henao of Spain for company.

The two leaders out front are Pole Michal Kwiatkowski and Russian Pavel Kochetkov - but they look like they might be starting to fade.

Vincenzo Nibali, Alejandro Valverde and Chris Froome all look comfortable and happy to attack from the peloton at some point.

There's 47.8km to go.

Image source, Getty Images

Yusra Mardini has become the first athlete to represent the Refugee Olympic Team at Rio 2016.

Syrian Mardini, 18, won her women's 100m butterfly heat, however her time was not quick enough to progress.

Mardini's story is a remarkable one; you can read more about her here.

Kyle Edmund has progressed through to the second round with minimal fuss, beating Australian Jordan Thompson 6-4 6-2. 

There may only have been 30 people in the house to watch him, but an impressive first round nonetheless.

As the swimming gets underway with heats, two-time Olympic gold medallist Rebecca Adlington tells the story of her life in the water.

If you fancing trying to getting into swimming, read our special guide.

Image source, EPA

We're well under way now on day one of the Rio Games, so just in case you've been otherwise engaged - here's have you missed:

• USA's Ginny Thrasher won the first medal of the Games in the 10m Air Rifle.
• Britain's rowers made a good start in their heats, although Serbia's men took an unexpected dip when they capsized.
• GB's rugby sevens women made their Olympic debut with a 29-3 win over Brazil, but the hockey men lost 4-1 to Belgium.
• Geraint Thomas is the leading Briton in the men;s road race, with Chris Froome still in contention.
• Britain's Max Litchfield is through to the 400m individual medley final, plenty more swimming to come today... 

Image source, .

Right. Things are getting tasty on the road.

Britain's Geraint Thomas has set off to chase down the breakaway group, he's got a few riders including Belgium's Greg van Avermaet for company. They're 25secs behind the two leaders.

And Chris Froome is looking comfortable in the peloton, which is about another minute further back.

Has Thomas gone on to haul in the leaders for his mate Froome?

There's loads of live sport to get you teeth into.

Peruse all our video by heading over to this page.

Image source, .

Image source, BBC Sport

So a difficult start for Great Britain, as Belgium really bossed the final two quarters to seal a 4-1 victory, after Nickolas Catlin scored his team's only goal just before the midway point.

Britain will have a swift chance to redeem themselves when they face New Zealand at 21:00 BST tomorrow night.

Aimee Lewis
BBC Sport in Rio

It's toasty on court eight, temperatures rising, bodies sweltering. Kyle Edmund handling the heat well, though, comfortably winning the first set against Jordan Thompson in under 40 minutes. That forehand of his hotter than the Rio sun.

There aren't many here to watch the pair, about 30 in total, which includes coaches, volunteers and, well, me. 

"Great serving," says Brit Jamie Barker from the sidelines, clapping in encouragemebt. 

Image source, .

The BBC's Andrew Cropper has more on the loud bang heard at the finish line near Copacabana beach.

"Security forces telling us on ground they exploded a suspect bag

"Area is just behind spectator seating after finish line of road race at Copacabana beach."

The men are chugging up and around the Vista Chinesa and are about to take on the 516m descent. It's steep and scary.

What's it like to ride it? Well, take a look at Alistair Magowan's video (he drove it, but possibly did it wearing Lycra).

You can watch it here., external

Victory sealed for Belgium, as Cedric Charlier does the business, popping into an open goal after Britain goalkeeper George Pinner had rushed off his line.

Alistair Magowan
BBC Sport in Rio

You might not have heard of heard of United States rower Megan Kalmoe.

The London 2012 bronze medallist in the women's quadruple sculls wrote a blog recently asking the media to stop focusing on problems which affected the Rio Olympics such as water quality and Zika, and start concentrating on the athletes. Her musings included the line "I will row through s*** for you, America". 

So you can forgive me for approaching a guy, who was wearing a T-shirt with that quote emblazoned on his chest. 

Turns out it was Megan's younger brother Bill.  

He explains: "She loves writing and had a very strong opinion about the media's portrayal of Rio hosting the Olympics. She thought it was better to focus on the athletes and just say they would do whatever it takes. There are bigger concerns worldwide. 

"She had no idea the blog and that quote would take off and make national news. But she has loved the reaction of those who've rallied around her and is pleased and surprised by the response."  

Heather Watson is about to kick off her campaign against China’s Peng Shuai.

The 24-year-old world number 67 will be looking to build on a successful 2016, which included a maiden Grand Slam doubles title, as she won the Wimbledon mixed doubles alongside Henri Kontinen.

Peng Shuai is a 30-year-old former world number 14, who reached the semi-finals of the US Open in 2014.

Natalie Pirks, who is at the finish line of the men's road race, has more on that loud bang.

We've just heard a loud bang from the men's road race course. It stopped the commentators in their tracks.

It seems it came from somewhere near the finish line.

So, for some this day has been the end of their 2016 Olympics - but it could be the beginning of your journey into their sport.

Over the past few years BBC Breakfast's Mike Bushell has given them all a go (watch the video above) and you can find out how to get into all the Olympic sports here.