Rudisha is the first athlete since 1964 to retain his 800m title. 

Shaunae Miller won gold with the Superman technique, and it looks like a trend that could catch on.

Why has no one done this before? 

Did Shaunae Miller dive over the line to win women's 400m gold? Katharine Merry, who won Olympic bronze in 2000, doesn't think so.

"Miller was one of the pre-race favourites," she told BBC Breakfast. "She basically dropped across the line.

"Many are saying she dived to try to get an advantage but she didn't. She leaned to do a dip finish but, was basically so tired, she lost her footing and fell over the line.

"A lot of Americans are saying you can't do that but she didn't dive. She had so much tiredness in her legs."

Cupid found British race walker Tom Bosworth at the Copacabana.

The 26-year-old almost pulled off a shock when he led the 20km walk at the halfway stage, before finishing sixth. 

On Monday, he surprised boyfriend Harry Dineley with a marriage proposal. 

And this hasn't been the only proposal at this Games... 

Image source, Gracenote

Could Britain - guaranteed a gold medal though sailor Giles Scott today remember - hold off the Chinese until the end of the Games?

Today apparently is crucial to answering that question.

Gracenote - who eat statistics for breakfast with a side order of data - crunched the numbers before the Games and predicted Great Britain would win three medals today with China picking up eight.

Gracenote's Simon Gleave says Britain's performance in the track cycling - which was better than their record at recent major events would suggest - has put Britain ahead at this point.

But if China meet expectations they should pull clear in terms of total medals by the end of the Games.

First, you turn your nose up at our multi-million pound power plant investment.

Then, you go and nick second place in the medal table.

British-Chinese relations have got a little strained in recent months.

And they are getting no better with Britain still above China in the standings.

Are we sure this is wise?

Great Britain's race against the class of 2012 is tight.

After day 10, Team GB have one more medal - 41 - than they managed four years ago. They have two fewer golds however at 16.

To check out how Great Britain are doing and see more charts than mission control, go to our dedicated page.

Is British 100m breastroke gold medal winner and world record holder Adam Peaty faster than a great white shark? Find out by watching him take the Peaty v Fish challenge.

Mark Cavendish's place on the podium was confirmed despite an ugly crash in the final discipline of the omnium - the points race.

Cavendish took a left-hand drop into South Korea's Sanghoon Park, despite looking over that shoulder a half-second before.

"It was my fault, I should have been looking more," said Cavendish.  

"I hope he's all right. I apologised to Elia after he went down."

Thirty Tour de France stages wins, second only to Eddy Merckx.

A points classification winner in all three Grand Tours.

A former world road champion.

A host of day race wins, including the prestigious Milan - San Remo.

And now the groaning Cavendish mantelpiece can be topped off with an Olympic medal after his omnium silver. 

Not that the man himself was completely satisfied.

"It is really nice but gold would have finished the collection," Cavendish said.  

Ian Stark
Olympic silver medallist and BBC equestrian pundit

One wonders will Valegro go on? I hope he does because we just love watching him.

What a partnership they have been. He looked fantastic, he didn't look 14 - he looked more like a 12-year-old. He was in flying form.

It's always that worry - do we keep going? Do we keep asking? Or do we let him retire on a high.

Image source, Getty Images

BBC Radio 5 Live

Charlotte Dujardin didn't only win dressage gold for GB yesterday.

She also won another proposal from her fiance!

Watch the video below to find out more.

Charlotte Dujardin won GB's 40th medal of the Rio Games, and 16th gold, by retaining her individual Olympic dressage title.

"I feel a little bit overwhelmed," she said.

"It means the absolute world to me to come out here and finish off being individual gold medallist again.

"I felt a huge amount of pressure and expectation.

"It could be one of my last rides on Valegro. There is talk of retirement for him so for me to finish it in this way, it's a really emotional time and I'm so happy."

Image source, PA

BBC Radio 5 Live

Team GB won three medals on Monday with one gold, one silver and one bronze. Catch up with the action with BBC Radio 5 live's podcast by clicking right here.

Image source, .

Watching horses dance is one of the more surreal sights of the Olympics but Team GB's Charlotte Dujardin and her truty steed Valegro are brilliant at it.

Dujardin won gold in the individual dressage on Monday to become the first British woman to retain an individual Olympic title.

She also became the second British woman to win three Olympic gold medals as the 31-year-old emulates the achievement of cyclist Laura Trott.

Compatriot Carl Hester, 49, was seventh out of 18 while Fiona Bigwood, 40, was 17th. Ireland's Judy Reynolds was 18th.

• Charlotte Dujardin retains her individual dressage title to win gold for Team GB
• Briton Mark Cavendish wins his first Olympic medal with silver in the omnium
• Sophie Hitchon becomes the first British woman to win an Olympic hammer medal by taking bronze
• Brazil celebrates its first athletics medal of the Games as Thiago Braz da Silva wins the pole vault
• David Rudisha wins the 800m title

Watch all this and more with out Olympic playlist catch up...

Image source, Getty

Great Britain are already guaranteed one gold medal from today's action with sailor Giles Scott having accumulated an unassailable lead in the Finn class.

Trott's cycle team-mate Becky James will be aiming to add women's sprint success to her keirin silver medal.

From 22:00, Great Britain's Jack Laugher should feature in the men's 3m diving while Scunthorpe's Jack Burnell goes in the open-water swimming fromfrom 13:00BST.

London 2012 bronze medallist Robbie Grabarz and European bronze medallist Chris Baker are GB's entrants in the men's high jump (final from 00:30 Wednesday). 

Andrew Pozzi is Britain's fastest 110m hurdler this year, with the final (02:45 Wednesday) missing both Olympic champion Aries Merritt and world champion David Oliver. Laura Muir, fifth at last year's world championships, is the fastest female 1500m runner outside Kenya and Ethiopia so far this year (02:30 Wednesday).

Image source, Rex

When she gets on those pine boards, Trott swaps ditz for grit.

Yesterday she was photographed swiftly grabbing a bin liner, external as she came off track, apparently to empty her stomach contents into such was the effort that she has piled into her omnium title defence.