British snowboarder Katie Ormerod is out of the Winter Olympics in Korea after suffering a severely fractured right heel in training on Thursday.
The 20-year-old medal hopeful suffered a minor wrist fracture in practice on Wednesday but was still intending to compete in Sunday’s slopestyle.
But the British Olympic Association (BOA) has confirmed she will have “emergency surgery” on Friday.
The Games in Pyeongchang start on Friday and run to 25 February.
Mike Hay, Team GB chef de mission, said the team were “deeply sorry” and “desperately disappointed” for Ormerod.
Dan Hunt, British Ski and Snowboard’s performance director, added: “Her determined and fearless nature will see her come back from this and reach the exciting potential and future that is ahead of her.
“Her team-mates will now be giving their all for her as well as their nation.”
Ormerod became the first Briton to win a slopestyle World Cup gold in Moscow last year and also took bronze at the 2017 X Games.
The Yorkshirewoman finished third at the Big Air World Cup in Pyeongchang in 2016 – a test event for the Winter Olympics.
Ormerod has suffered a series of injuries in her career, snapping her anterior cruciate knee ligament, damaging the meniscus in both knees and fracturing her shoulder, both arms and back.
“The injuries don’t bother me – I just keep coming back stronger,” she told the BBC before the Games.
Britain is aiming for its most successful Winter Olympics with a target of at least five medals.
Sports data analyst Gracenote is forecasting five medals for Britain and, while they ranked Ormerod as a top-eight prospect, they did not predict her to win a medal.
British snowboarder Ben Kilner, speaking to BBC Radio 5 live:
Injury for any athlete is the worst thing and I am sure Katie will be very, very, gutted. It is very bad news. I am sure in a couple of days she will take it on the chin.
It is called an extreme sport for a reason because injury is not ruled out to say least.
On the impact on Great Britain’s medal tally prospects: We are subtracting a gold. I had all hopes on Katie. I am sure she would have done very well for us.