But perhaps you've never heard of it.
"I had certainly never heard of it before, but he was an awesome athlete," says San Francisco resident, Katie Adler.
This event is one that our own Shaun White dropped out of because it's too dangerous (and he'd rather concentrate on the Half Pipe, says ESPN) but it's an event Mark McMorris competed in, although he had broken a rib. McMorris, by the way, went on to win a bronze medal.
It's also an event that a Norwegian favored to win missed out on because he broke his collarbone during a training run. An easy competition, it is not.
And Kostenburg won by using a trick he'd never even tried before, reports USA Today.
The news source reports that the trick consisted of:
"four and a half backwards spins (1620 degrees of rotation), while grabbing the backside of his board."
Kostenburg did it all while remaining his usual "mellow". He tells press he is not into pressure of any sort:
“I really want to medal just as much as the next guy, but my attitude in the run, if I land, that’s cool,” he said.
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