Goepper has been participating in the AFP World Tour competitions since 2010. He achieved his first podium finishes in January 2011 with third place at the Pipe Open Series in Northstar-at-Tahoe and at the Winter Dew Tour in Killingtonl (Vermont) . At the beginning of the 2011/12 season he won third place in slopestyle at the New Zealand Winter Games in Cardrona . As the season progressed, he came third in slopestyle at the Winter Dew Tour in Killington and first in Snowbasin . At the Winter X Games 2012 in Aspen , he won silver in slopestyle. He made his World Cup debut in March 2012 in Mammoth , which he finished in 11th place. In the same month he finished second in slopestyle at the Dumont Cup in Newry. In the following season he won the Austrian Freeski Open in Kaprun and the Dumont Cup in Newry . At the 2013 Winter X Games , he won gold in slopestyle. In March 2013 he won the bronze medal in Slopestyle at the Freestyle Skiing World Championships in Voss .
At the beginning of the 2013/14 season, Goepper won his first World Cup in Cardrona . This season further victories in slopestyle at the New Zealand Freeski Open in Cardrona and at the Winter Dew Tour in Breckenridge followed . He reached second place in the World Cup in Copper Mountain and the Dumont Cup in Newry . In January 2014 he won the gold medal again at the Winter X Games . In his first Olympic participation in Sochi in 2014 , he won the bronze medal in slopestyle. He finished the season in seventh place in the overall World Cup and second place in the Slopestyle World Cup. The following season he finished third in slopestyle at the Dew Tour Mountain Championships in Breckenridge and second in big air at the Frostgun Invitational in Val-d'Isère . At the Winter X Games 2015 in Aspen , he won the gold medal in slopestyle for the third time in a row. The following year he came 11th in slopestyle at the 2016 Winter X Games . In the 2016/17 season he won the Nor Am Cup in Calgary and took second place in the halfpipe at the Aspen Snowmass Open. At the Winter X Games 2017 he came in 11th place in slopestyle, as in the previous year. In March 2017 he won the silver medal in slopestyle at the X-Games Norway in Hafjell .
In the 2017/18 season Goepper won the Slopestyle World Cup on the Alpe di Siusi and took third place in Slopestyle at the US Grand Prix and second place in Slopestyle at the US Grand Prix in Snowmass and at the Winter Dew Tour in Breckenridge. So he reached sixth place in the Slopestyle World Cup at the end of the season. At the Winter X Games 2018 , he finished seventh in slopestyle. In February 2018, he won the silver medal in slopestyle at the Winter Olympics in Pyeongchang . He repeated this success a year later at the 2019 World Cup in Park City .
United States
