And that is a wrap from the overnight team at BBC Sport towers. Fear not though for the early team are mere minutes away from arriving.

See you all tomorrow for more sport. 

After a golden start in the velodrome on Thursday night, Sir Bradley Wiggins will look to become the first Briton to win eight Olympic medals when he goes in the men's team pursuit.

Today also sees the start of the athletics with 42-year-old Jo Pavey becoming the first Briton to compete at five consecutive Games in track and field.

At the Lagoa, Helen Glover and Heather Stanning are attempting to maintain an unbeaten record stretching back to 2009.

Meanwhile, Team GB, led by Charlotte Dujardin and her horse Valegro, are well placed to secure a medal in the dressage.

Here's an unusual event, a joint gold-medal ceremony for Simone Manuel and Penny Oleksiak. That means no silver, and two national anthems.

I don't want to cause a diplomatic incident but the US was played before Canada. 

Hungary's Laszlo Cseh wins his semi in 51.57 seconds whilst Michael Phelps takes second just 33 minutes after his gold winning performance in the 200m IM.

END OF SPORT.

Adrian Moorhouse
1988 Olympic 100m breaststroke champion on BBC TV

If Joseph Schooling does that tomorrow he might not just get a medal he might get the medal. 

Shock, confusion and history!

After a short period of switching between who had won, both Simone Manuel and Penny Oleksiak get themselves gold medals over the much fancied Australian Cate Campbell in a remarkable race. 

History has been made as Simone Manuel becomes the first black female gold medalist in the swimming pool.

And amazingly, almost most insignificantly, Canada's Penny Oleksiak is only 16 years old.

Joseph Schooling of Singapore pops in an Asian record with a 50.83 to blast home in the second semi!

Swim that time in the final and he might win it! Chad le Clos is second. 

GB's James Guy after finishing seventh in the men's 100m butterfly semi: "Michael Phelps is the GOAT (greatest of all time) and he was beside me so it was hard not to get distracted. I think I got a bit cold in the cool room - we were waiting so long for Michael's presentation. I've had a busy week so far and then back tomorrow before an evening off, which is quite nice."

Semi-final two

1 Aleksandr Sadovnikov Russia

2 Li Zhuhao China

3 Mehdy Metella France

4 Joseph Schooling Singapore

5 Tom Shields United States

6 Chad le Clos South Africa

7 David Morgan Australia

8 Evgeny Koptelov Russia 

Adrian Moorhouse
1988 Olympic 100m breaststroke champion on BBC TV

James Guy swam really well and it's great news for the medley relay.

Laszlo Cseh wins it, Michael Phelps was nowhere with 20m to go but finishes second!

Konrad Czerniak was third, James Guy faded into seventh. 

Konrad Czerniak out very quickly in lane two, Michael Phelps is fourth at the turn...

I think Michael Phelps is just about dry from his last race. Ready?

Rebecca Adlington
Double Olympic gold-medal winning swimmer on BBC One

This morning James Guy was the second fastest Brit ever in this event. This will be his eighth race this week, but when you see someone like Michael Phelps swimming about a million, James is only 20 so why not go for it?

James Guy is bouncing in the call room, waiting for his chance. You don't get to swim next to Michael Phelps very often. Go well!

Take the medal off first.

Semi-final one

1 Santo Condorelli Canada

2 Konrad Czerniak Poland

3 Piero Codia Italy

4 László Cseh Hungary

5 Michael Phelps United States

6 James Guy Great Britain

7 Grant Irvine Australia

8 Quah Zheng Wen Singapore