A huge cheer for Mo Farah, plenty of British fans in Rio of course. Andrew Butchart also runs for GB tonight.

Muktar Edris and Dejen Gebremeskel are the second and third fastest men over this distance this year. The two Ethiopians could be Mo's biggest rivals.

A bit of Johnny Cash - lovely stuff - and now it's Mo Farah. 

Hurt could well be on the menu. But there'll be no letting anyone down...

Huge cheers in the arena as Maicon Siqueira leaps around before diving into the crowd. He then raises a Brazilian flag above his head before embarking on another lap, photographers frantically trying to keep up with him.

Here's the moment that Bianca Walkden ticked Great Britain's medal tally over to 64, with taekwondo bronze.

Well done Steve. Keep up the good work. 

Nadine Erskine: Really going to miss seeing @usainbolt, external on the #Olympics, external stage. Phenomenal athlete and a fantastic role model

 Steve Bradley: Sleep pattern well and truly nailed. Put kettle on for #motime, external spot of #taekwondo, external 1st

Maicon Siqueira gets in a back flick and it is enough to propel the Brazilian into a 5-4 lead and take the bronze medal. Mahama Cho bends his knees. Dejected. He gave everything but it wasn't to be.

Luke Reddy
BBC Sport in Rio

Nipped into the BBC office. You know GB have had a good Games when extra paper has to be added at the bottom.

Image source, bbc

Smiles all round! Bronze medals around the necks of Asha Philip, Desiree Henry, Dina Asher-Smith and Daryll Neita after their run last night.

The race of their young lives. Silver and gold to come? 

Into the final minute and it 4-4 between Mahama Cho and Maicon Siqueira. 

This is going to the wire...

Julius Yego still leads the men's javelin with his opening launch of 88.24m.

Someone needs to challenge the 90m mark for gold...

It has been six nights since Mo Farah won gold in the 10,000m.

He's already done one 5k heat - where he fell over. Can he possibly be in top shape tonight?

“It will be harder than London – a lot harder,” he said earlier this week.

“Even in my training there are certain days where I’m supposed to do a session but my body doesn’t allow me to do it, so I have to wait for another day.

“Or I’ll talk to the coaches and say I’m feeling a bit tired and cut my session down a bit. You’ve just got to be smart.” 

Tom Fordyce
Chief sports writer in Rio

The result we all expected, the 1-2-3 many imagined. No world record for Semenya, but you sense it is there when she wants to attack it.

Paula Radcliffe
Women's marathon world record holder on BBC One

That was really quick through 600m but Semenya had enough left to win the title convincingly. Semenya was so strong. I do think she's capable of breaking the world record. She definitely has it in her.

He's next. Gold medal number four? 

Round two done and Mahama Cho leads 3-1. Is it enough? We shall see. 

Into the third and decisive round we go...

A great race with a tight finish, but USA's Matt Centrowitz manages to hold off his rivals to take a surprise gold.

2012 champion Taoufik Makhloufi of Algeria has to settle for silver and New Zealand's Nick Willis, bronze

An admirable effort from GB's Charlie Grice who really gave his all, but faded in the end to finish 12th.

Lynsey Sharp finished sixth in a personal best time, she will be happy with that, she could do no more.

Francine Niyonsaba took silver, as per the form book, with Margaret Wambui coming through for bronze.