Halfpipe world champion Porteous produced a stellar display as the superpipe competition came down the final run, seeing off a challenge from silver medallist American Aaron Blunck.

Porteous became the first athlete to land a switch left double cork 1440 and to complete successive double cork 1620s.

Another home favourite in David Wise, a double Olympic gold medallist and four-time superpipe winner at the Winter X Games, took the bronze medal, beating Canada's Noah Bowman to the final podium position.

In the first event of the day in Aspen, Swiss world champion Andri Ragettli collected gold in the men's ski slopestyle.

Max Moffatt of Canada came through in second, with the 2019 Winter X Games champion Alex Hall of the United States placing third after climbing from ninth place in the final run of the competition.

Hall, a winner in the men's ski big air yesterday, also featured on a US podium sweep of the ski knuckle event.

Quinn Wolferman won the gold medal, with silver going to Jake Mageau and Hall earning a third medal of the Games with third-place finish.

A total of 35,700 people attended the competition in Aspen across the three days.