Well, well. What a day.

Great Britain are finally guaranteed a medal at these Winter Olympics courtesy of the men's curlers. You can read all about their win here.

We're going to leave our text updates here but you can still watch the BBC TV coverage above. There will be a lot of dissection and discussion on a dramatic but controversial day.

You can scroll down too for headlines, clips and reaction. We'll be back late tonight!

Medal events: 4

Biathlon (men's mass start), freestyle skiing (women's halfpipe, men's ski cross), speed skating (men's 1,000m)

Attention will be firmly on the halfpipe and curling rink from a British perspective on Friday.

Zoe Atkin goes in women's ski halfpipe (01:30-02:49) final, having qualified in fourth-place.

At 12:05 GMT, the Great Britain women's team look to follow their male counterparts in reaching the curling final. They meet Sweden in the semi-final.

Elsewhere, Ollie Davies, who became the first Briton to reach the ski cross big final at a World Championship last year, marks his Olympic debut with the knockout runs beginning at 06:45 and the finals starting just before 08:00.

Cornelius Kersten returns in speed skating's 1000m event. He's ranked 11th in the world over this distance in the 2021-22 season.

Mica McNeill and Montell Douglas go in the first two runs of the two-woman bobsleigh (12:00 and 13:30).

Christopher Dean
Former Olympic champion on BBC TV

The whole process has been farcical. The organisation, the politics surrounding it to get to this point has been a real mess. And the loser is figure skating, the women's event is suffering from it.

The doping hasn't made her have the ability she has. It may have allowed her to train harder and longer, but her technique is second to none.

The other two Russians competing are out of the same school so it casts a shadow over of the whole system.

Did we not have this when the Olympics were in Sochi? They said 'ok, we are going to ban Russia, but we are going to let them all come under a different flag'. But it's the same systemic issue of the Russians coming to compete.

But for sure I don't think Valieva knew what she was taking.

Jayne Torvill
Former Olympic champion on BBC TV

It's a difficult one. For her personally I would want her to be in the final. But is that fair to the other competitors? But as a young 15-year-old I don't think this was any of her doing, she has been very misguided.

Robin Cousins
Olympic gold medallist figure skater on BBC TV

The reaction to Kamila Valieva's struggles in the women's singles finale continues. She missed out on the medal places after a poor final routine.

Someone thought having her do that was better than having her go home to her family and to wait and sort this out, knowing she could have two more Olympics ahead of her.

To see the talent and the unquestionable quality of Valieva... To see it put into this arena in that way should never have happened.

BBC Sport

The rest of the men's curling team break down their performance:

Grant Hardie: "After my missed shot in the second end for them to steal a two, you're fearing the worst but we all stuck together, turned that round and we're chuffed."

Bobby Lammy: "They're quite out there as a team, they speak a lot, but we knew we had to bring that energy as well. Even after that two, we knew we still had to keep together, keep fighting, keep going for it and thankfully we managed to pull through.

Hammie McMillan: "We kept control. We were quite happy blanking and we knew the percentages at the seventh end and not giving up a two was key.

BBC Sport

Bruce Mouat speaking to BBC Sport after securing Great Britain's place in the curling final: "I'm excited to play that game - got a day off tomorrow but just looking forward to hopefully going for that gold. I'm shaking.

On having to play twice in one day: "We play a lot of these two games days on tour so we were happy to get the win.

"The last two weeks for myself has been a bit of a rollercoaster and I'm just so excited to share this with the guys and that celebration at the end was just pure elation - I don't think I can sum it up any other way."

Rhona Howie
Olympic gold medallist curler on BBC TV

Great Britain have trained so hard as a team, they work well together. They don't argue with each other, they discuss shots and come to an opinion they're all happy with.

Everything is just so impressive with this young team.

Look at the relief on Bruce Mouat's face...

Rhona Howie
Olympic gold medallist curler on BBC TV

Image source, Getty Images

I'm speechless. What a game of curling, They were so patient. That was tough because Shuster was a showman out there. Four blank ends, they didn't panic, they stayed calm, and just kept the pressure on USA. Really impressive by them all

They got Shuster rattled. They knew that - John was very loud in the first half of the game - they know that's how he plays the game.

The GB team didn't let it bother them one iota.

Just joining us? Here are the headlines on day 13.

• Great Britain are into the men's curling final after a dramatic final-stone win over USA. It means Team GB are guaranteed their first medal of the Games.
• Great Britain's women could join them in the curling final. They secured a place in the semi-finals with another thrilling win earlier on Thursday.
• The Kamila Valieva story took another uncomfortable turn as the Russian 15-year-old, competing despite a failed drugs test, had a number of stumbles in her routine. In the end, after all the anger and controversy, she finished fourth as team-mate Anna Shcherbakova took gold.

• And earlier in the day, Great Britain's Zoe Atkin qualified for Friday's freestyle ski halfpipe final with the fourth best score.
• GB's Gus Kenworthy is also into men's final, but he did so by stealing the final qualification place.
• Canada won women's ice hockey gold by beating defending champions USA.

• USA star Mikaela Shiffrin's difficult Games continued as she crashed out of the alpine combined. Michelle Gisin won gold for Switzerland.
• There was also a controversial women's ski cross final as Sweden's Sandra Naeslund won gold but German Daniela Maier was promoted into bronze by the judges.

Dawn Wilson: Just managed to stop myself giving a little "whoop" in the office as I am NOT watching the #bbcolympics live feed of the curling, but is now a good time to mention I have a little crush on Bruce Mouat?

Natalie Lewis: YES!!! we are actually going to win a medal, an actual medal. Day 13 lucky for Team GB, well done Bruce & co. It's been meh daily us having bad luck and not winning anything, so thank you for giving us a bit of joy.

Image source, Getty Images

It's going to be an early one on Saturday.

The gold medal match begins at 06:05 GMT on Saturday morning.

Matt: Superb from Team Mouat! A fantastic win and a guaranteed medal at last. Maybe Team GB will have a golden end to Beijing 2022 after all?

Tim Symes: Think you can say that was a Brucie Bonus.

Zider81: Well done lads, great watch of two very different styles.

Bruce Mouat, Grant Hardie, Bobby Lammie and Hammy McMillan are Olympic finalists.

They're speaking to BBC TV right now.

Stay tuned.

Thomas Duncan
BBC Scotland in Beijing

Huge all round for Bruce Mouat, Grant Hardie, Bobby Lammie, and Hammy McMillan.

A thud of the brush on the ground and a massive roar from the skip too.

The winning moment...

There are more hugs between the British team. Bruce Mouat has been the calmest man in the house all night but now he is letting out some of those emotions.

Great Britain will play Sweden in Saturday's final.

At worst they have a silver medal guaranteed but it could be GOLD.

Shuster gives it a good go with his final stone but it's not to be for the Americans.

Bruce Mouat punches the air. The British flags wave.

My heart!!!

GREAT BRITAIN ARE INTO THE FINAL.

Team GB have a medal at these Winter Olympics.