Kyle Smaine claimed a surprise victory in Mammoth Mountain ©Getty Images

United States’ athletes secured the top three places on the podium in both the men’s and women’s halfpipe competition at the International Ski Federation (FIS) Freestyle Skiing World Cup on the 22-foot slope in Mammoth Mountain.

Gold in the men’s competition, held under lights for the first time, was taken by 2015 world champion Kyle Smaine following a fantastic performance including grabs such as a screaming seamen mute on his switch left-side 720 or a seatbelt japan on his right-side 900.

This, in addition to the mix two doubles and a right-side 1080, made sure the 26-year-old ended up on top with a score of 92.20.

"I just wanted to go out and do my run," Smaine said.

"I’ve been working towards this run and haven’t put it all together yet this year.

"I didn’t care that it was the last run or what the score ended up being.

"I was skiing for me tonight and I’m beyond stoked that I ended up winning."

Current World Cup leader Alex Ferreira claimed the silver medal with 90.40 points whilst Torin Yater-Wallace completed the podium line-up on 89.20.

These results mean Ferreira and Yater-Wallace have clinched their spots on the American Olympic team for next month's Winter Olympics in Pyeongchang.

Brita Sigourney led an all-Amierican podium on home snow ©Getty Images
Brita Sigourney led an all-Amierican podium on home snow ©Getty Images

Brita Sigourney, who has three Winter X Games medals to her name, won the gold medal thanks to a points total of 91.20 following some impressive combinations.

"Training didn’t really go well for me and I was definitely starting to feel the pressure," Sigourney said.

"I had to put it all aside and I did it.

"I’m super happy I landed all of my runs and pulled it off in the finals, and I’m so stoked I’m going to the Olympics for the second time."

Compatriots Maddie Bowman and Devin Logan took the silver and bronze medals respectively with scores of 89.80 and 83.80 points.

The men’s and women’s aerials events also took place in the US, but with Lake Placid as the host venue.

There was no American dominance in this competition, however, as Australian athletes took two of the top three medals in the women’s.

Lydia Lassila was the best performer with her total of 99.75 points, thanks to a precise double full and full, enough to give her the gold medal in just her second competition in the last 10 months.

Australia's Lydia Lassila was competing in just her second competition in 10 months ©Getty Images
Australia's Lydia Lassila was competing in just her second competition in 10 months ©Getty Images

"My game plan was to just do my jumps, my way," the Vancouver 2010 gold medallist said. 

"I wasn’t doing the hardest jumps, but I knew I could execute them well and get into the high 90’s or maybe even break 100 here or there.

"We’ve got a long day again tomorrow so today I just took it one jump at a time and tried to conserve as much energy as possible in preparation for tomorrow as well."

Hanna Huskova of Belarus claimed the silver medal with a total of 95.55 with Australia’s Laua Peel just under five points behind on 90.59.

The men’s event saw China’s Jia Zongyang win his third event in four appearances this season thanks to a score of 126.99 points. 

Oleksandr Abramenko of Ukraine and Canada’s Olivier Rochon completed the podium with points totals of 123.45 and 120.24 respectively.