Shaun White competes in final Olympic Games after calling time on illustrious career
From CNN's Ben Morse
An Olympic legend's career will come to an end in the next 24 hours.
Shaun White, one of snowboarding's biggest names, announced on Saturday he will retire after the Beijing Winter Games.
The 35-year-old said that a series of injuries influenced his decision to call time on his distinguished career.
White, once dubbed the "Flying Tomato" because of his flowing red hair, has won three halfpipe Olympic gold medals since his Winter Games debut at Turin in 2006, adding 13 titles at the Winter X Games to become one of the sport's most iconic figures.
He will make his last Olympic bow as the men's snowboard halfpipe final gets underway at 8.30 p.m ET.
"I've done so much in the sport – I hope that my riding speaks for itself," White said in his retirement announcement.
"I'm always trying to push and progress and do the next biggest things and try to pick up with what trends are happening within the sport and be ahead of that curve. I'm just kind of enjoying every moment.
"I'm most proud of staying on top of the sport that's ever-changing for as long as I have done. That's legacy performance."
Trimetazidine is a drug banned by WADA that makes "your heart work more efficiently," doctor says
From CNN's Hannah Ritchie and George Ramsay
The drug trimetazidine is at the center of a doping controversy surrounding the Russian Olympic Committee at the 2022 Beijing Winter Olympics.
It is listed in the World Anti-Doping Agency's (WADA) 2021 prohibited substances under the category of "hormone and metabolic modulators," a class of drugs that have been banned by WADA due to evidence of athletes using them for performance enhancement.
"What this drug does is actually make your heart work more efficiently. It doesn't change your blood pressure very much or change your heart rate," Dr. Elizabeth Murray, paediatric emergency medicine physician at the University of Rochester Medical Center, told CNN's Early Start program on Thursday.
"An athlete wouldn't get jittery or necessarily feel all that different, but they would theoretically be able to perform at a higher level for longer. It would increase their endurance, potentially," she added.
The most famous case of doping involving trimetazidine is Chinese swimmer Sun Yang, who was handed a three-month suspension in 2014 after testing positive for the drug.
Banned metabolic modulators have been used by cyclists, weightlifters, boxers, wrestlers, skiers and other athletes from dozens of countries including Russia, Poland, Columbia, Belgium and Germany.
Here are more key things to know: Controversy surrounding a drugs test — reportedly taken in December — that has only come to light during the Winter Olympics in Beijing continues to delay the medal ceremony of the figure skating team event, which was won by the Russian Olympic Committee (ROC).
Russian newspaper RBC Sport reported on Wednesday that a member of the ROC's figure skating team tested positive for trimetazidine, according to a source familiar with the situation and a source in the Russian Figure Skating Federation.
The International Olympic Committee (IOC) has not mentioned any athletes in connection with the case.
What is the ROC? Russian athletes are unable to compete in the Olympics under their country's name due to sanctions from the IOC and WADA as a result of the country's "systemic manipulation" of anti-doping rules during the 2014 Sochi Games.
At the 2018 Games in PyeongChang, Russian athletes who could prove that they were clean were "invited" by the IOC to compete as an "Olympic Athlete from Russia" (OAR) under the Olympic flag and anthem.
In February 2021, the IOC announced Russian athletes would compete as neutrals under the ROC acronym at the Tokyo 2020 and Beijing 2022 Olympics.
Read more about trimetazidine and the controversy surrounding it here.
1:09 p.m. ET, February 10, 2022
Kremlin won't confirm positive drug test reports as it backs Kamila Valieva and all Russian figure skaters
From CNN's Rebecca Wright, Christine Brennan, Helen Regan and Nathan Hodge
"It [the reports] flared up among those who did not have verified information," said Peskov. "As usual, not knowing the details, everyone began to yell far and wide. We will not join this orderly row of yellers."
It remains unclear exactly when the positive test was taken, but Russian newspaper RBC Sport reported on Wednesday that a failed drug test was taken in December and has only come to light during the Winter Olympics.
The controversy has continued to delay the medal ceremony of the figure skating team event, which was won by the Russian Olympic Committee (ROC).
"The only primary source of information should be the IOC," Peskov added.
"You have heard the IOC statements, there is no point for us to add anything here. We are guided by the IOC and we wish our athletes, including Valieva, only gold medals."
Multiple sources have told CNN Sports analyst Christine Brennan the athlete from the figure skating team event on the ROC team who tested positive for a prohibited substance is a minor.
The only minor on the ROC figure skating team is the 15-year-old star Valieva, who made history in the team event this week as the first woman to land a quad jump at the Winter Olympics.
Valieva is the favorite to take gold in the women's figure skating event — probably the most celebrated event at the Winter Olympics. That competition gets underway on Feb. 15.
RBC Sport reported on Wednesday that a member of the ROC's figure skating team tested positive for trimetazidine, according to a source familiar with the situation and a source in the Russian Figure Skating Federation.
CNN has reached out to the ROC for comment but has not yet received a response.
Trimetazidine is a drug used to treat people with a heart condition known as Angina, a condition in which a person has chest pain due to poor blood flow to the heart. It is on the World Anti-Doping Agency's (WADA) banned list.
The ROC team won gold in the team event ahead of the USA in silver and Japan in third.
Gold medalist Irene Schouten says she "didn't feel that much pressure" before winning in Olympic record time
From CNN's Ben Morse
Irene Schouten won gold in the women's 5,000m speed skating event in an Olympic record time and admitted she wasn't feeling "that much pressure" beforehand.
Schouten won her second gold medal of Beijing 2022 in stunning fashion, breaking a 20-year-old Olympic record set by Germany's Claudia Pechstein at the Salt Lake City Games in 2002.
The Dutch skater's 6:43.51 time was just over four and a half seconds faster than Canada's Isabelle Weidemann, who won the silver.
The 29-year-old said she felt relaxed before taking to the ice, adding that her two gold medals from Beijing are "something no one will ever take away from me."
"On the 3,000m, there was a lot of pressure, and on the 5,000m, I was more like: 'I have the Olympic gold, now, I can just skate fast.' I didn't feel that much pressure. It was completely different today. I was way more relaxed," she told the media.
"I spoke about it with my coach because I was a bit like, 'I shouldn't be too relaxed,' but luckily that wasn't the case.
"I felt really good in training, so of course, you want to go for the second one."
It was her second new Olympic record of the Games, having set a new fastest time in the 3,000m event on Saturday.
And Schouten admitted that she knew that she'd have to be particularly fast on the day if she wanted to finish first in the 5,000m race.
"I knew that if I wanted to win, I had to break the Olympic record, but I didn't think about 6:43 (6:43.51).
"When I saw the time of Isabelle Weidemann, I thought: 'Oh sh*t, this is really fast,' but then I skated and felt really good. I could go faster every lap."
"The first three laps weren't great, I had to find my rhythm. But with six laps to go, I still felt really good. I knew I could slowly accelerate and build up my speed. I felt like I had the power over those last five laps."
10:13 a.m. ET, February 10, 2022
Germany's luge team relay gold makes Natalie Geisenberger the most decorated luger in Olympic history
By CNN's Ben Morse
Germany won their third straight luge team relay gold in a dramatic finale at the Yanqing National Sliding Centre.
Composed of multiple gold medal winners Natalie Geisenberger, Johannes Ludwig and pairing Tobias Wendl and Tobias Arlt, Germany were the clear favorites to retain their title in Beijing.
The event was first added to the Olympics in 2014, with Germany winning gold at Sochi 2014 and PyeongChang 2018.
The gauntlet was laid down by the Austrian team moments before, setting a time of 3:03.486.
Geisenberger, fresh off winning gold in the women's singles luge, got the Germans going but they were still behind the Austrians when she tagged in Ludwig.
And even after Ludwig — who won gold in the men's singles event days before — finished, the reigning champions still trailed.
But behind the brilliant Wendl and Arlt, the Germans managed to get their noses in front, finishing just 0.8 seconds ahead to claim gold.
The gold is the seventh Olympic medal for Geisenberger, who passes Armin Zöggeler as the most decorated luge athlete in the history of the Olympic Games.
Austria finished with the silver medal while Latvia won bronze.
8:57 a.m. ET, February 10, 2022
The flair's in the hair
From CNN Sport staff
American John Landsteiner (L) clearly missed the hairstyle memo from his teammates Matt Hamilton (center) and Christopher Plys (R) for their curling competition.
The sport may have been invented and played on the frozen waters of Scotland in the 16th century, but those lochs have nothing on the flowing locks on display in Beijing.
10/10 hair for us.
8:42 a.m. ET, February 10, 2022
Irene Schouten breaks women's 5,000m speed skating record to win second Beijing gold
From CNN's Jack Bantock
Irene Schouten won her second Beijing 2022 gold medal in stunning fashion, breaking a 20-year-old Olympic record in the women's 5,000m speed skating event at the National Speed Skating Oval.
The 29-year-old's blistering 6:43.51 time smashed the record set by Germany's Claudia Pechstein at the Salt Lake City Games in 2002 and was just over four and a half seconds faster than Canada's Isabelle Weidemann, who won the silver.
Incredibly, Schouten's time was over three seconds quicker than Pechstein's original record of 6:46.91.
It's not only Schouten's second gold in Beijing but also her second new Olympic record of the Games, having set a new fastest time in the 3,000m event on Saturday.
Martina Sablikova of the Czech Republic rounded out the podium places for bronze.