Olympic snowboard slopestyle champion Sage Kotsenburg crashed in training and suffered a concussion before the finals of the Big Air at Fenway Park in Boston on Thursday evening, according to his Twitter.
Kotsenburg, 22, was to be the headliner of the finals after fellow Olympic slopestyle champion Jamie Anderson was eliminated in earlier qualifying.
Big Air at Fenway was to be Kotsenburg’s final competition of the season, according to Sports Illustrated. He finished 10th in snowboard slopestyle at the Winter X Games two weeks ago.
Kotsenburg has said he would like to compete in slopestyle and big air at the Pyeongchang 2018 Winter Olympics, where big air will make its Winter Games debut.