The course is 1050m long, with a 120m drop. The action is relentless. As soon as one race of four ends, the next one begins. The 32-man field is split into eight races, with the top two in each one progressing. We keep going until we have a winner.

It's brilliant.

It looked like Tciknavorian really badly injured his leg. The other racers, those still waiting to compete, were all crowded around a TV to see what had happened.

It takes a lot to stop these lads, though. Racing has already resumed...

Image source, Getty Images

Ski cross is usually such an exciting, adrenaline-fuelled event but there's a very sombre mood at the Phoenix Snow Park after Frenchman Terence Tciknavorian crashed badly in the second of eight heats.

He has just been wheeled away on a stretcher. It looks a very serious injury.

Image source, Reuters

It's totally against the run of play but the USA have just equalised against the Czech Republic in their men's ice hockey quarter-final.

It's currently 2-2 with just under nine minutes left in the second period.

You can watch the match live above or on the Red Button.

The GB women did the business against Canada earlier to qualify for the curling semi-finals. Can the men join them?

Their final group match against the USA is just under an hour away and we'll be all over that one.

Skip Kyle Smith's team are joint second in their table after thrashing Norway 10-3 on Tuesday.

Image source, PA

Mark Shaw: Phenomenal qualifying in the men's big air. Who can best handle the pressure of a medal being within touching distance will decide the final. Congrats Billy Morgan on qualifying!

Image source, Getty Images

That has been a full-on start to this 12th day of the Winter Games.

Are you sticking with us? You'll be rewarded.

Coming up very soon the knockout races in the men's ski cross begin, with Great Britain's men's curlers looking to secure their place in the semi-final in about an hour.

Anna Thompson
BBC Sport in Pyeongchang

Here’s a very happy Billy Morgan after making the final. “I was really happy with today and it went pretty perfect,” he tells me.

He has the 1800 in his locker but doesn’t think the jump is big enough to land it and hasn’t been practising for qualification. The only thing that was worrying him was an ear infection.

“When I was on the jump yesterday I thought the scaffolding was shaking but it was the balance in my ears.

“I woke up at 4am this morning and the ear was completely blocked but I’ve had it syringed and it’s been OK.”

Billy Morgan will take part in the men's big air final. Peetu Piiroinen can only take sixth, leaving Morgan as one of the six best in this second heat.

The European X Games bronze medallist can look forward to Saturday's final.

Massive. Switch 1440 with more air than a jumbo jet.

Once again, Billy Morgan has an anxious wait...

Another contender falls. Vlad Khadarin couldn't stick the landing.

Peetu Piiroinen is the last man to go...

Ed Leigh
Freestyle skiing and snowboarding commentator on BBC TV

Billy Morgan is just two riders away from the finals. Tyler Nicholson thought he had it there.

Billy Morgan is almost there! Tyler Nicholson can't believe it, but he misses out by 0.75 points.

Two to go...

Image source, Getty Images

The judges make us wait...

Switch 1440! Nicholson nails the landing!

This is going to be tight...

They keep dropping, they keep failing to nail the landing.

Three to go.

Still, Tyler Nicholson. The Canadian a huge threat to Billy Morgan...

Tim Warwood
Freestyle skiing and snowboarding commentator on BBC TV

Billy Morgan cements his place. Now he has pushed away a couple of ladders and he's a little bit more secure...

90.50! It's not enough to improve his sixth position, but it's certainly made it more likely that Billy Morgan will reach the final.

It's a higher mark for those looking to topple the Briton.

There are six more riders to drop...

Ed Leigh
Freestyle skiing and snowboarding commentator on BBC TV

It's better! That was beautiful!

So, so measured.