Greg Bretz, Snowboard SuperPipe

As a Winter X rookie last year, Greg Bretz finished 15th in SuperPipe. But this season has been a different ball game for the 19-year-old rider from Mammoth, Calif. Over the course of five U.S. Grand Prix of Snowboarding events, he battled to a three-way tie with J.J. Thomas and Luke Mitrani in the standings. He comes to Aspen after receiving the U.S. Snowboard Team's discretionary pick for the coveted fourth spot on the Olympic halfpipe roster. (Dave Lehl/ESPN Action Sports)