Kristin Skaslien is a tad heavy with her final stone. GB take an early lead.

Thomas Duncan
BBC Scotland in Beijing

Bruce Mouat and Jen Dodds were delighted with how they "controlled the four-foot" against the USA.

Basically, they got lots of stones inside the red zone and prevented the US from lodging theirs in.

The signs from that first end are they're bang on form again. Early days, though.

Katie Falkingham
BBC Sport in Zhangjiakou

There’s a bit of a crowd here tonight, but not that you can hear them.

As part of the Olympics’ Covid countermeasures, no cheering is allowed, instead replaced by ferocious flag waving.

Yet at the end of each round of jumping, a guy with a microphone is trying to gee them up and create an atmosphere of sort. Hard task.

Image source, BBC Sport

Image source, BBC Sport

Rhona Howie
Olympic gold medallist curler on BBC TV

We saw in the round-robin game yesterday, Kristin Skaslien played some cracking shots and really put the pressure on Jen.

So I think the key will be the performance of the two females tonight.

Better from Norway's Magnus Nedregotten who nudges a British stone out of the scoring zone.

This is becoming quite a tense opening.

Team GB looking good in this opening end.

Kristen Skaslien and Magnus Nedregotten have not quite found their range and Jen Dodds flicks one of the red stones out of the way to leave two yellows close to the tee.

Rhona Howie
Olympic gold medallist curler on BBC TV

A really nice weight, perfectly placed from Jen Dodds.

Steve Cram
Curling commentator on BBC TV

There's a real atmosphere in here, quite a few of the teams and coaches in to watch these two semi-finals.

It's time and Jen Dodds gets us under way with a precise opening stone. Ideal.

Thomas Duncan
BBC Scotland in Beijing

The Ice Cube looking, well, icy...

Image source, BBC Sport

For those of you enjoying your first taste of curling, it's basically a little like lawn bowls on ice with the objective to get more stones nearer the centre of the scoring area (house) than your opponent.

There'll be eight ends. And if you've been watching over the last few days you will realise that Bruce Mouat and Jen Dodds, aka, the world champions, are pretty good at this.

Right over we go to the Ice Cube with an Olympic medal on the line for Team GB....

Wonder if Bruce Mouat and Jen Dodds managed to get those naps in?

Thomas Duncan
BBC Scotland in Beijing

We're down to two sheets at the Ice Cube, which means it's the business end.

GB v Norway, and Italy v Sweden for a shot at gold.

Bruce Mouat said the Team GB win against the USA earlier was their best performance. Can they replicate that at the crucial point?

Right time for us to get in the groove for the curling...

BBC Red Button

You can watch all the action over on the red button right now.

Suzanne Schulting, who won gold in the 1000m four years ago is also through but American medal hopeful Kristen Santos has just tumbled out in the final quarter-final.

The men's 1000m quarters up next.

Bit of action currently ongoing in what is speed skating's shortest and most frenetic distance.

There's none of the pacing required for longer-distance skates and Arianna Fontana, the Italian who collided with Team GB's Elise Christie in 2014 and then won Olympic gold in 2018, has already advanced.

Ed Leigh
Snowboarding commentator on BBC TV

There's a of pressure under the time constraints of the Olympic competitions to get the score out straight away, I don't think they use the replays.

I spoke to one of the judges and he said they're distraught and they've been excellent up to this point.

I thought women's slopestyle judging was fantastic but this is a big one.

I don't know what the process is or if there is a process that they can use.

Here is exactly what Ed is talking about..

Ed Leigh
Snowboarding commentator on BBC TV

Canada's Max Parrot won Olympic snowboard slopestyle gold earlier, three years after being diagnosed with cancer, but Ed Leigh says there was some controversy behind it.

Six months of chemotherapy, diagnosed just after the last Games and he came back on won three events on the bounce.

Straight after that it was phenomenal, like that timeout had given him time to visualise all of the things that he hadn't done.

Don't get me wrong, it was an incredible win but it wasn't without controversy.

You don't want to see the umpires, the referees or in this case the judges as the centre of attention but no doubt all of the forums have lit up, social media is full of it.

The judges missed Max Parrot on his fourth section, the big frontside 1440 and you're supposed to grab the board but instead he did one of the cardinal sins. He used a body grab to keep his head and his feet together and that would be marked down and the judges had put execution at such a premium that something like that should have cost him two or three points.

The gold is gone wrong there. I watched the flower ceremony afterwards and Max wasn't celebrating heavily and Mark McMorris had a face like thunder. I think Su Yiming actually took the gold there.

We saw the women's slopestyle in Pyeongchang in 2018, totally blown out by the wind, that was a weather situation but this is a mistake on the judges part.