Four-time gold medallists the United States take on the 2016 Olympic champions Germany shortly in Lyon.

The US who beat Japan 1-0 after extra time to reach the semi-finals, face the Germans again, having thrashed them 4-1 in Group B.

Emma Hayes' side will expect to face a greater challenge this time around as Germany, playing in their fifth semi-final in as many Olympic Games, are likely to be intent on revenge.

"You saw in the group stage they scored four goals against us. We want to give it back to them," Germany defender Giulia Gwinn said at the Lyon stadium.

"We are collectively strong, if we take our chances, we’re dangerous for every opponent."

Image source, Getty Images

A first attack on the medal positions comes from Dora Varella of Brazil who kicks her score up to 89.14 by landing a final trick.

But she can't catch Sky Brown.

Zach: If Sky manages a medal here despite her injuries then fair play. Come on Sky!

Tommy Tucker: Sky Brown is a superstar!

Here's how it stands as the skaters prepare for the final run:

1. Kokona Hiraki (Jap) - 91.98
2. Sky Brown (GB) - 91.60
3. Arisa Trew (Aus) - 90.11

All to play for.

Conor McNamara
Commentator on BBC Radio 5 Live

Big moment for Team GB in the skateboarding. Sky Brown with a huge 91.660, the second highest score we have seen today.

The muted celebration suggests that is not all she can give here. She has more and yet she is into the silver medal position as it stands.

This was Sky Brown's opening run where she didn't manage to beat the buzzer with her last trick.

Video of that amazing second run to come shortly.

Did Sky Brown land her final 360 trick in time?

It's in! Her coach picks her up in celebration and it's a gigantic rise to 91.60 for the British athlete.

Up into silver position!

Great first run from Sky Brown but she needs to go even better, and hope her shoulders hold up for a medal.

Image source, Getty Images

Sky Brown operates a goofy stance on her board, which means she puts her left foot at the back rather than the front.

The regular stance has the left foot as the lead.

Seven out of eight in this field use the regular stance.

Good to be different, Sky!

Image source, Getty Images

Welcome to the competition, Arisa Trew!

She's completed her run and nailed it.

Into second place with a huge 90.12.

Scratch that - we have a new leader and it's a monstrous number.

Japan's Kokona Hiraki, who won the silver medallist in Tokyo and led the prelims, has just soared out to 91.98.

That feels massive. Sky Brown forced into fourth.

There are 10 nations in this qualifying phase of the women's team pursuit and the eight fastest will advance into the next round.

The Irish quartet of Lara Gillespie, Mia Griffin, Kelly Murphy and Alice Sharpe are the quickest of the two quartets to finish so far with a time of 4:12.447.

Hosts France are next to go, with Great Britain the ninth team to go.

A mega score from American Bryce Wettstein lays the gauntlet down for the rest of the field.

She's just shot out to 88.12, which would have been the best number in the prelims.

One for Sky Brown and company to chase.

Dinesh: Sky Brown is such an entertainer. Great to watch.

Conor McNamara
Commentator on BBC Radio 5 Live

That was going so well for Sky Brown. She was pushing it, it seemed she was really going to impress the judges. She completed her hardest trick and immediately fell down after it.

Ed Leigh
Skateboarding commentator on BBC TV

Sky Brown has got a big smile on her face. The fall wasn't counted.

I think she has got the most amount of speed and the biggest amplitude that we have seen so far on this course. She's absolutely coasting round this course.

80.57. Silver medal position right now.

No sign of any lingering injury concerns for Sky Brown after falling on her third run earlier today;

A huge kickflip and stalefish to wrap up the run draw huge whoops from the crowd. It's a solid opening and Brown's 80.57 moves her into an early second place.

She does bail on her last trick but the time has run out and she is not penalised.

Marc Churchill
Skateboarding commentator on BBC TV

Sky [Brown] puts everything in to it and even when she is not 100%, she is still a very dangerous person to share the course with.

Next up, Sky Brown.

Huge expectations for Australia's Arisa Trew coming into this competition but she's just crashed out on her first run - as she did twice in her three rounds this morning

One of the favourites for the gold has two runs left to find her best form.