Sildaru’s first run score of 93 points meant she finished ahead of Norway’s Tiril Sjåstad Christiansen and Johanne Killi, who came second and third respectively.

Victory ensured a first-ever Winter X Games medal for Estonia, where the teenage sensation rides a 100-metre hill near her home.

"It is hard there because we don't have mountains," Sildaru, who travels across Europe to ski in the winter, told The Denver Post.

On a day of several firsts, Canada’s Spencer O’Brien secured her first Winter X Games gold medal by winning the women’s snowboard slopestyle with a score of 91 points on her second run. 

The 27-year-old saw off the challenge of the United States’ Jamie Anderson, who posted 89 points on her third run, and 15-year-old American Hailey Langland with 88.

A backflip from the US’s Joe Parsons in the snowmobile freestyle event was arguably the trick of the day, earning him a 15th career gold medal with a first run score of 90 points.

Compatriot Heath Frisby won the silver medal with a second run score of 87.66, and was followed onto the podium by Canada’s Brett Turcotte, who registered 86.66.

There was further American success in the women’s ski superpipe as Maddie Bowman became the first person from her country to win four consecutive Winter X Games gold medals.

The Olympic halfpipe champion’s third run score of 89 points saw her better those of Japan’s Ayana Onozuka, 85, and the US’s Annalisa Drew, 83.

Canada’s Max Parrot secured top honours in the snowboard big air event with his best two runs giving him an unrivalled total of 93 points.

Defending champion and compatriot Mark McMorris was two points behind on 91, while Japan’s Yuki Kadono’s 88 condemned Sebastien Toutant to fourth spot and prevented an all-Canadian podium.

Action in Aspen is set to continue tomorrow and scheduled to conclude on Sunday (January 31).