The water is fairly flat at Lagoa today.

We are expecting it to be tight. Really tight.

Hold onto your hats.

GB's Heath and Schofield go in lane three.

Who are the main rivals to Great Britain's Jon Schofield and Liam Heath then?

Germany are represented by a mixture of youth and experience with 34-year-old Ronald Rauhe, a three-time Olympic medallist, alongside 23-year-old Tom Liebscher. The pair’s best result together saw them win both world silver and the European title in 2014.

Serbian duo Nebojsa Grujic and Marko Novakovic failed to defend their world title last August, finishing third, but they became European champions for the first time in June. 

Spain and Lithuania also look like loaded crews.

Image source, Getty Images

Bronze-medal winning light-heavyweight Josh Buatsi. BBC Sport Facebook page. , external

Live. Now. Go.

On the same water where their GB team-mates won several medals in the rowing, Liam Heath and Jon Schofield are paddling for a gold in the men's K2 200m at 13:47 BST.

The pair narrowly missed out on silver at London 2012, and aren't willing to settle for anything less than the top spot on the podium in Rio.

"We've got an Olympic medal, become Olympians, and now the only improvement would be to become Olympic champions. That's what we both want," said Schofield. 

Image source, Getty Images

Earlier Usian Bolt ran his fastest time of the season to win the 200m semi-final, watch him enjoying a cheeky laugh with Canada's Andre de Grasse over the finishing line...

Usain Bolt ran his fastest time of the season to win his Olympic 200m semi-final.

Looking ahead to the Rio 2016 final, the Jamaican discussed his chances of breaking the world record with Sonja McLaughlan:

“It depends on the lane I get,” said the 29-year-old, "I know I can do great if I get a top lane. If I get a lower lane it's always harder for me."

"There's no room for mistakes if I'm going to run sub 19 (seconds)."

"It’s going to be really, really, really hard."

Image source, PA

13:40:Men's kayak double 200m - British pair Liam Heath and Jon Schofield qualified fastest and have a chance of a medal.

14:00: Diving - Tonia Couch in the women's 10m platform semi-finals. The final is at 20:00.

14:30: Taekwondo - Jade Jones starts the defence of her London 2012 title. Should Jones make the -57kg gold medal match, it will be at 02:00.

15:00: Triathlon - Alistair Brownlee seeks to retain his London 2012 triathlon title with brother Jonny - bronze medallist four years ago - likely to be in hot pursuit.

15:00: Badminton - Marcus Ellis and Chris Langridge have the chance to claim Great Britain's first Olympic medal inthe event since 2004 when they face Chinese duo Wei Hong and Biao Chai in the men's doubles bronze medal match. 

BBC Monitoring
News from around the globe

Image source, .

Prior to running in the men’s 3000m steeplechase final last night, Kenya’s Ezekiel Kemboi caused a stir with his choice of haircut for the race.

Kemboi’s haircut was described as a “shocking decision”, external by Kenyans.co.ke, which said: “Kemboi has taken his fans aback after unveiling what has been termed a Mwai-Kibaki hairstyle. While a section of Kenyans have frowned upon Kemboi’s new haircut, others urged him to ensure he bags the gold medal to avoid a double embarrassment.”

Athletics Kenya tweeted, external “Wondering which haircut style #EzekielKemboi will have for #Rio2016 3000m SC finals? There it is! #athletics #ken”

According to Nairobi News, external, Kemboi has a history of unusual haircuts, donning a Mohawk style for the 2012 London Olympics.

Although Kemboi finished in bronze medal position last night, he was later stripped of his medal and disqualified for stepping off the track, with the Kenyan Star describing Kemboi’s mistake as “disastrous”, external.

Imagine being so confident you have time to do a 360 slam dunk in the quarter final of the Olympic men's basketball... 

That's what USA's DeMar DeRozan did against Argentina on Wednesday. 

They went on to win 105-78 and face Spain in the semi-final.

"Everyone's cheering for Usain, but they have someone they have to boo against."

American sprinter Justin Gatlin is philosophical about being the villain to Usain Bolt's hero.

Image source, EPA

BBC Monitoring
News from around the globe

Image source, AFP

Alin Petrache has said he intends to resign as the head of the Romanian Olympic and Sports Committee, after apologising, external for the “poor and questionable quality of some of the sporting kits of the Romanian Olympic team”.

According to the blog, external of Romanian journalist Catalin Tolontan, Romanian athletes’ t-shirts shrank after being washed and “deteriorated after only a few days of wear”.

At London 2012 Liam and Jon took the bronze in the Men's Kayak Double 200m. As the only crew to still to be together in Rio, they are hoping that their partnership can be a winning one.  

They go for gold at 13:47 BST.

Image source, Getty Images

Kenya’s Ezekiel Kemboi, 2012's 3000m steeplechase gold medallist, HAD announced his retirement before the Rio Games but has since changed his tune.

He had crossed in third but was disqualified for stepping outside of the track. 

"I had opted to retire right after the Olympics only if I had come home with this medal....now I feel that I have to bring back this medal not by protesting again but right on track," he wrote on Facebook. , external

"Kemboi is not retired I will be coming to London 2017 to re-claim my medal from France. No limits."

Kenya had won every men's steeplechase gold since the 1984 Los Angeles Games.

Germany's Max Rendschmidt and Marcus Gross have won the gold in the men's double kayak 1000m final.

The pair led at the 250m mark and never gave up the lead. Serbia duo of Marko Tomicevic and Milenko Zoric did make a late charge but had to settle for silver. Australia's Ken Wallace and Lachlan came third.

Could being born on 23 March be the secret behind Team GB Olympic success?

A curious statistic has emerged that Jason Kenny, Sir Chris Hoy, Sir Steve Redgrave and Mo Farah were all born on the same date.  

Spooky. 

Plenty more gems like this in today's editon of Rio Gossip. 

Image source, Getty Images

Image source, Jonny Brownlee

Alistair and Jonny Brownlee have been training at a Brazilian military base ahead of their tilt for a triathlon one-two this afternoon, using the runway to run and cycle away from prying eyes and heavy traffic.

"After everything else, the thing it took to persuade the military to let us use it was the installation of a new dishwasher for the officers’ mess," UK Sports' performance director Simon Timson told the Daily Mail. , external

"For the price of that, the triathlon team are able to complete their preparations in the best way possible."

She's 20 years old, she's ranked among the top 30 women's golfers and she's playing for Team GB.

BBC Breakfast's golfing enthusiast, Naga Munchetty, met Charley Hull before she headed for Rio to find out more about this Olympian (and to play some golf).

Marns: Hearing the theme tune to the TV show Ironside after one of the Taekwondo finals! 

Wait, what? 

Craig Pickersgill: Skills, fluke or luck? Zero gravity?!?

See below. We're still not sure...

Image source, Reuters