Brazil have not just woken from their slumber, they've had two cups of coffee and are wide awake!

New Manchester City signing Gabriel Jesus adds a second, smashing home a volley from close range.

It has been a long time coming, but the home nation have scored their first goal of this Olympics! It is not the most beautiful of goals, but I am sure Gabriel Barbosa or the Brazilian fans will not care.

Marco Koch, who finished seventh: "I use hypnosis in my preparation. Did it work today? No, as you can see."  

1 Brianna Throssell Australia

2 Zhang Yufei China

3 Zhou Yilin China

4 Madeline Groves Australia

5 Mireia Belmonte Spain

6 Natsumi Hoshi Japan

7 Hali Flickinger United States

8 Cammile Adams United States 

Image source, Getty Images

A race which looks wide open is the women's 200m butterfly final (02:54 BST).

Australian Madeline Groves was the fastest qualifier while Spaniard Mireia Belmonte García won silver at this event four years ago and goes again. She has a Rio bronze from the 400m IM in her suitcase already...

Evgeny Rylov wins it, Mitch Larkin treading water in the last 20m or so but he does take second spot. 

Mitch Larkin ahead of Jacob Pebley, but here comes Evgeny Rylov...

Adrian Moorhouse
1988 Olympic 100m breaststroke champion on BBC TV

He's got beautiful long arms has Rylov.

Mitch Larkin - the most Aussie sounding bloke at the Games? - is long and smooth and cruises through the first 50.

Former Canada goalkeeper Karina LeBlanc is having TV trouble...

Surprise gold medalist Dmitriy Balandin: "I think the whole of Kazakhstan will be drinking tonight."  

Evgeny Rylov was the fastest qualifier for the semis.

Semi-final two:

1 Masaki Kaneko Japan

2 Christian Diener Germany

3 Jacob Pebley United States

4 Evgeny Rylov Russia

5 Mitch Larkin Australia

6 Andrei Shabasov Russia

7 Li Guangyuan China

8 Corey Main New Zealand 

Adrian Moorhouse
1988 Olympic 100m breaststroke champion on BBC TV

Murphy looks good. I'm surprised he didn't get under one minute 55 seconds though. He was calm and collected. I've never seen him break into a smile though... 

The first semi is won by Ryan Murphy, who destroys the pack in the final 75m or so. The 100m champion looks supreme.

Jiayu Xu is second with Ryosuke Irie third. Josh Beaver shot his bolt. Fifth. 

Huge cheers in Salvador as thousands of Brazilians breathe a collective sigh of relief because they have scored for the first time at this Olympics!

Douglas Santos plays in a great low cross towards the far post for Gabriel Barbosa, who scuffs home. Not the tidiest of goals, but Brazil won't care. They are ahead.

At the halfway point it's the magnificently-monikered Josh Beaver ahead from 100m champ Ryan Murphy. Fast time. 

As the great Jon Bon Jovi once said Matt, 'Live when I'm alive, sleep when I'm dead.'

Under way in the latest swim. Ryan Murphy flying. 

Matt Ridgway: Swimming on the telly and football on the laptop. Who needs sleep?

Sharron Davies
BBC Sport swimming expert

Oleksiak is the latest of a whole bunch of youngsters who excite us at every Olympic Games. When you're young you have no fear of anyone else, you know if you don't win a medal then you're probably going to have another chance in four years.

That takes off a tremendous amount of mental pressure. But having said that my money is on Cate Campbell in the final.