- White, starting last in the halfpipe, watched bronze medallist Scotty James wipe out before nailing a spectacular last run of the day to snatch victory from Japan's Ayumu Hirano, celebrating wildly afterwards.
Snowboarding great Shaun White sealed his Olympic legendary status with a breathtaking run under pressure on Wednesday, as strong winds played havoc with the ski schedule and Mikaela Shiffrin's bid for multiple medals.
White, starting last in the halfpipe, watched bronze medallist Scotty James wipe out before nailing a spectacular last run of the day to snatch victory from Japan's Ayumu Hirano, celebrating wildly afterwards.
It was sweet redemption for the 31-year-old veteran, known as the "Flying Tomato" because of his red hair, who won gold in 2006 and 2010 and helped put the hipster sport on the map, but flopped in Sochi four years ago.
"Oh man, that was awful and amazing at the same time. I knew I did a great ride and I was proud of that and I could walk away with my head high, but when they announced my score and I'd won, it crippled me," he said.
"I was so overwhelmed with happiness, I've been through so much to get here."
It was a landmark win, as it brought USA their 100th Winter Olympics gold stretching back to speed skater Charles Jewtraw in 1924. White, Chloe Kim, Jamie Anderson and Red Gerard have locked up all four snowboarding titles for America so far in Pyeongchang.
While White celebrated at Phoenix Park, it was a very different story at Yongpyong Alpine Centre where high winds forced the women's slalom to be postponed until Friday.
Not one of the skiing events has gone ahead on schedule so far, with winds of up to 25 metres (82 feet) per second making it difficult even to stand in some mountain areas.
TWO KOREAS AGAINST JAPAN