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Russian Valieva, who recorded a positive doping test in December, finishes fourth after falling on ice
15-year-old led by almost two points after free programme event on Tuesday
She had already won gold in team event before positive doping result became public
Britain's Natasha McKay failed to qualify for free skate
Women's freeski halfpipe qualifying
Ed Leigh
Snowboarding commentator on BBC TV
It was a bit smaller in the amplitude but Zoe Atkin had a really nice technical run there.
Great start out of the bat - she looks pleased with that one.
Image source, Getty ImagesWomen's freeski halfpipe qualifying
Katie Falkingham
BBC Sport in Zhangjiakou
Zoe Atkin looks pleased as punch with that run, and she gets a hug from Eileen Gu at the end of it.
85.25 puts her in fourth position in these early stages of qualifying, and that's a very good place to be for the British world bronze medallist.
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Men's curling
That's Mr T and The Rock who are cheering on Team USA today.
Curling - the favourite sport of Hollywood hard men.
Here's The Rock...
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Women's freeski halfpipe qualifying
Ed Leigh
Snowboarding commentator on BBC TV
Eileen Gu has said before that she struggles more with the nerves in qualifying than the finals - but that doesn't seem to be the case here today.
Women's freeski halfpipe qualification
Katie Falkingham
BBC Sport in Zhangjiakou
Wow, 93.75 - Eileen Gu makes her mark.
She shows little reaction to that score. China's 'snow princess' expects nothing less than the best.
Women's freeski halfpipe qualification
China's Eileen Gu has already won a gold and a silver in these Games - in the big air and slopestyle respectively - and is going to be safely through to the final with a mammoth 93.75
Men's curling - Canada 2-2 Great Britain (after two ends)
Thomas Duncan
BBC Scotland in Beijing
Bruce Mouat's final shot is an attempt to raise his own stone into the house at the expense of a Canadian one.
Unfortunately it doesn't come off, and Canada skip Brad Gushue draws in to level the match,
Women's freeski halfpipe qualification
Some of the most stunning images of these Games came from the snowboard halfpipe events and now its the turn of the skiers.
We have 20 entrants, they all get two runs and their best score counts with the top 12 advancing.
Women's freeski halfpipe qualifying
Katie Falkingham
BBC Sport in Zhangjiakou
Two very strong runs to open proceedings in halfpipe qualifying from the United States' Hanna Faulhaber and Canada's Rachael Karker.
They score 84.25 and 88.50 respectively. Eileen Gu is up next.
Women's freeski halfpipe qualifying
Jenny Jones
2014 Olympic bronze medallist snowboarder on BBC TV
Zoe Atkin is not as technical as some of the top riders but she is so consistent and she has really strong solid grabs and that's what is in her favour here.
I definitely think she will qualify through to the finals - she has fresh legs, she hasn't done any other contests previous to this and that's an advantage, coming in with a positive mindset.
She looks great in practice.
Men's curling - Canada 0-2 Great Britain (second end)
Thomas Duncan
BBC Scotland in Beijing
Canada are lying three with the hammer as we get down to the final two stones each.
With his first, GB skip Bruce Mouat manages to remove two of them. They're still in a tight spot, though.
Women's freeski halfpipe qualifying
Jenny Jones
2014 Olympic bronze medallist snowboarder on BBC TV
Eileen Gu is coming in as the favourite because she hasn't lost any halfpipe contests she has been in in the last year. But this is the third event she has been in now, has she considered the fatigue in her legs, has she managed that well.
This is Gu's favourite event - she definitely feels relaxed when she's in this event if you watch when she's riding she goes so big and her tricks are very technical. If she was to pick one event it would be this - anything less than a gold I think she will be disappointed.
These youngsters coming in they have got fire in their bellies - the Canadians, the Americans - the excitement is building for this qualification.
Men's curling
Some motivational words for Team USA coming from Hollywood hard man Mr T - of 80s TV show The A-Team fame.
The United States need to win to progress in the men's curling and are 1-0 down after only one end against Denmark.
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A total of 28 countries have won a medal at these Games. Sadly, Great Britain are nowhere to be seen on the medal table, yet.
Image source, .
Image source, .The men's curling moves over to BBC Red Button and it's the women's freeski halfpipe qualification that will be on BBC One.
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Men's curling - Canada 0-2 Great Britain (after one end)
Steve Cram
Curling commentator on BBC TV
It's always a nice way to start - there was a chance of a three for Great Britain but that first stone of Bruce Mouat's just spun out. Canada may think that's OK and could've been worse - but GB will be happy with that.
That's exactly what you want to do when you have the hammer is get your two on the board.
Men's curling - Canada 0-2 Great Britain (after one end)
Thomas Duncan
BBC Scotland in Beijing
The GB boys always start fast, and Bruce Mouat has a straightforward takeout to make sure they take two in the first end. The Scot makes it, no problem.
On a roll.
Men's curling: Canada 0-2 Great Britain (after one of 10 ends)
Bruce Mouat's quartet make a great start as, with the hammer, they take a 2-0 lead after the opening end, thanks to his accurate last stone that bumps the red Canadian one out of the house and it's GB up by two.
Women's freeski halfpipe qualifying
Katie Falkingham
BBC Sport in Zhangjiakou
She's had a 13-day wait but finally GB freestyle skier Zoe Atkin gets her Olympic campaign under way today.
The 19-year-old competes in halfpipe qualification, hoping to book her spot in tomorrow's final.
Recognise the surname? She's the younger sister of Izzy Atkin, who won Team GB's first Olympic skiing medal four years ago. Unfortunately, Izzy has had to pull out of these Games after failing to recover from breaking her pelvis in December, but she has stayed in China to watch her little sis.
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