Video PlayerClose
Kyle Mack of USA trains ahead of his match of men's big air of snowboard at the 2018 PyeongChang Winter Olympic Games at Alpensia Ski Jumping Centre, PyeongChang, South Korea, Feb. 24, 2018. (Xinhua/Fei Maohua)
Kyle Mack of USA trains ahead of his match of men's big air of snowboard at the 2018 PyeongChang Winter Olympic Games at Alpensia Ski Jumping Centre, PyeongChang, South Korea, Feb. 24, 2018. (Xinhua/Fei Maohua)