The crowd say Beau.. SELECTA! New Zealand's Beau-James Wells sends the crowd wild, but is it enough for a medal?

No! Wells racks up 91.60 and a place in... fourth. It's close but it's not right.

Paul Williams: This ski halfpipe final is insane. Such talented athletes.

Image source, AFP

Man down! France's Kevin Rolland, who according to our man Woodsy is a "hero in the sport", bounces off the halfpipe and drops 20 feet into the white stuff. That's gotta hurt.

He took bronze in Sochi - not this time. The medics race over to see if he's OK, thankfully we see him moving a few minutes later.

Defending Olympic champion David Wise is next up... woah! Woah! WOAH!! He becomes the first man to complete all four double corks in an Olympics and that surely means he's going to leapfrog current leader Alex Ferreira.

The crowd are whooping, Wise is grinning, the judges are thinking... 97.20!! He's into the lead!

Image source, EPA

As 16-year-old Nico Porteous decides not to use his third run...

Team GB's James Woods on BBC One: "I think Nico Porteous can say that was the run of his life so far and it was beyond anybody's expectation.

"It's an interesting move not to try to build on that second run, we'll see where that takes him."

Here's the man in the silver medal position... Nico Porteous. Woah! The New Zealander decides he can't better his run two score of 94.80 and settles for that mark. Strange...

Here we go then.... the third and final run. So it's quite straightforward how the medal placings are decided: it's simply the best score from a single run. Can someone bolt from the back?

19? 16?! Young man's game is the ski halfpipe. My days are over.

Image source, Getty Images

What a response by Alex Ferreira. The 19-year-old American scored 92.60 from his first run...he's backed it up with 96.00.

Oh my Gaaard...he shrieks repeatedly after his score is announced.

Tim Warwood
Freestyle skiing and snowboarding commentator on BBC TV

The USA could easily do a one-two-three here. There's an unparalleled belief, as a country, that they will do well and that they will perform. They have the calibre that, if they are performing, they will be topping the tables.

Max Haley: Nico Porteous deserves to win the halfpipe for his reaction alone - he was as surprised as everyone else he landed that!

Image source, Getty Images

Unfancied New Zealand skier Nico Porteous has just produced the run of his life in the men's halfpipe final.

The 16-year-old scored 94.80 to go into the lead midway through run two, pushing American Alex Ferreira into second.

It's really put the pressure on. Two of the guys that have followed Porteous have crashed out.

Anna Thompson
BBC Sport in Pyeongchang

We've just completed the first run of the men's slalom and I've never seen so many DNFs... did not finish!

Out of 108 starters, only 52 will be racing the second run with the biggest casualty being pre-race favourite Marcel Hirscher.

There were lots of skiers who have never even competed at World Cup level allowed to race at the Olympics as they fulfilled the qualification criteria.

North Korea's Kang Song Il is currently 52nd, 23.71 seconds off leader Henrik Kristoffersen of Norway.

So, the top 30 skiers from the first run will race in reverse order to decide the medals and the remaining 22 will then have their second run.

Good news for Great Britain as not only is Dave Ryding in 13th place after the first run, some 1.37 seconds adrift, but Laurie Taylor is 27th.

Taylor (below) will be fourth off in run two, which starts at 13:30 local, or 04:30 GMT.

Image source, AFP

Ouch. Italy's Johanna Schnarf loses her footing going into gate two, skidding off the course and into the crash barrier. Luckily she's quickly onto her feet with the help of a marshal who's quickly on the scene.

Shiffrin has already won one gold at this Games but her bid for a second makes a shaky start. I thought she was going to stack it at the first bend, she had it all under control.

The American puts together It's a decent run - a time of 1:41.35 and 1.98 seconds adrift of Vonn - but will confident of overturning that with her favoured slalom to come later.

Image source, Reuters

Vonn still leads the way - but here is Mikeala Shiffrin...

...and she takes the lead! A triple fistpump follows from Lindsey Vonn as she slides to a halt after clocking 1:39.37. That's 0.74 seconds better than previous leader Ragnhild Mowinckel.

Image source, Getty Images

Here's Lindsey Vonn...

"Go on, get after them!" shouts an American voice as the veteran flings herself down the slope.

She makes a flying start...

Michelle Gisin is thought to be the favourite to challenge her compatriot Wendy Holdener but, hang on, what's this? Norway's Ragnhild Mowinckel has pushed both Swiss skiers down the pecking order after clocking 1:40.11 to take the early lead.

Anna Thompson
BBC Sport in Pyeongchang

Image source, Getty Images

The women's ski cross final is tomorrow but today they've had their seeding run.

This meant they all raced one at a time on the course and their time decided which heat they would be starting in.

Emily Sarsfield is Great Britain's representative and has finally made her Olympic debut after she was ruled out of Vancouver in 2010 with a knee injury and was overlooked for selection in 2014, despite meeting the Olympic qualification standard.

She was 22nd in today's seeding run, and will go in heat six, alongside the world number eight and nine Alize Baron of France and Canada's India Sherret.

It will be a tall order to make it to the quarter-finals but as we've already seen in the men's ski cross, anything can happen!