Greg Bretz 2018 Winter Olympics profile | Snowboarding

COPPER MOUNTAIN, CO – DECEMBER 13: Gregory Bretz takes a practice run in the halfpipe during the 2017 U.S. Snowboarding Grand Prix at Copper Mountain on December 13, 2016 in Copper Mountain, Colorado. (Photo by Sean M. Haffey/Getty Images)COPPER MOUNTAIN, CO – DECEMBER 16: Gregory Bretz competes in the final round of the FIS Snowboard World Cup 2017 Men’s Snowboard Halfpipe during The Toyota U.S. Grand Prix at Copper Mountain on December 16, 2016 in Copper Mountain, Colorado. (