Photos: Extreme sports at the Olympics

Russia’s Vic Wild competes in the men’s snowboard parallel slalom.  (Franck Fife / AFP/Getty Images)

Marielle Thompson (right) leads fellow Canadian Kelsey Serwa on her way to winning in the women’s freestyle ski cross event.  (Sergey Ilnitsky / EPA)

Skiers race in the ladies’ freestyle skiing ski cross final.  (Franck Fife / AFP/Getty Images)

Skiers race in the ladies’ ski cross quarterfinals.  (Javier Soriano / AFP/Getty Images)

Switzerland’s Fanny Smith (top) and Canada’s Kelsey Serwa compete in the ladies’ freestyle skiing ski cross event.  (Franck Fife / AFP/Getty Images)

Ophelie David of France (from left), Kelsey Serwa of Canada, Marielle Thompson of Canada and Anna Holmlund of Sweden compete in the ladies’ ski cross final.  (Cameron Spencer / Getty Images)

Jean Frederic Chapuis (from left), Arnaud Bovolenta and Jonathan Midol, all of France, and Brady Leman of Canada compete in the men’s ski cross final.  (Valdrin Xhemaj / EPA)

Australia’s Scott Kneller and Norway’s and Thomas Borge Lie compete in the men’s ski cross.  (Javier Soriano / AFP/Getty Images)

Russia’s Egor Korotkov (from left), Sweden’s Victor Oehling Norberg and Russia’s Sergey Mozhaev compete in the men’s ski cross.  (Franck Fife / AFP/Getty Images)

Victor Oehling Norberg of Sweden crashes to the snow followed by Egor Korotkov of Russia during the men’s ski cross quarterfinals.  (Streeter Lecka / Getty Images)

Maddie Bowman of the U.S. competes in the women’s freestyle skiing halfpipe qualifications.  (Mike Blake / Reuters)

Nina Ragettli of Switzerland crashes in the ladies’ ski halfpipe qualifications.  (Cameron Spencer / Getty Images)

Amy Sheehan of Australia crashes in the ladies’ ski halfpipe finals.  (Cameron Spencer / Getty Images)

Russia’s Vic Wild competes in the men’s snowboard parallel giant slalom semifinals.  (Javier Soriano / AFP/Getty Images)

Vic Wild of Russia competes in the snowboard men’s parallel giant slalom semifinals.  (Cameron Spencer / Getty Images)

Russia’s Vic Wild competes in the men’s snowboard parallel giant slalom quarterfinals.  (Javier Soriano / AFP/Getty Images)

Switzerland’s Nevin Galmarini competes in the men’s snowboard parallel giant slalom elimination run.  (Javier Soriano / AFP/Getty Images)

Patrizia Kummer of Switzerland (left) and Ester Ledecka of the Czech Republic compete in the women’s snowboard parallel giant slalom quarterfinals.  (Cameron Spencer / Getty Images)

Canada’s Michael Lambert crashes in the men’s snowboard parallel giant slalom qualification run.  (Javier Soriano / AFP/Getty Images)

David Wise of the United States competes in the freestyle skiing men’s halfpipe qualifications.  (Sergey Ilnitsky / EPA)

David Wise of the U.S. performs a jump during the men’s freestyle skiing halfpipe qualification round.  (Mike Segar / Reuters)

American David Wise competes in the men’s freestyle skiing halfpipe qualifications.  (Javier Soriano / AFP/Getty Images)

Russia’s Nikolay Olyunin (from left), France’s Pierre Vaultier, Alex Deibold of the U.S. and France’s Paul-Henri de Le Rue compete during the men’s snowboard cross final.  (Lucas Jackson / Reuters)

Trevor Jacob of the United States (from left), Stian Sivertzen of Norway and Alex Deibold of the United States compete in the men’s snowboard cross semi-finals.  (Julian Finney / Getty Images)

Russia’s Nikolay Olyunin (from left), Spain’s Lucas Eguibar, Trevor Jacob of the U.S., Alex Deibold of the U.S., Norway’s Stian Sivertzen and Canada’s Kevin Hill compete during the men’s snowboard cross semi-finals.  (Mike Segar / Reuters)

Anton Kushnir of Belarus in action during the men’s freestyle skiing aerials qualifications.  (Sergey Ilnitsky / EPA)

David Morris of Australia competes in the freestyle skiing men’s aerials finals.  (Cameron Spencer / Getty Images)

David Morris of Australia competes in the freestyle skiing men’s aerials finals.  (Quinn Rooney / Getty Images)

Mischa Gasser of Switzerland competes in the freestyle skiing men’s aerials qualifications.  (Cameron Spencer / Getty Images)

Eva Samkova of the Czech Republic (left) and Canada’s Dominique Maltais compete during the ladies’ snowboard cross finals.  (Lucas Jackson / Reuters)

Australia’s Torah Bright warms up before the ladies’ snowboard cross seeding runs.  (Franck Fife / AFP/Getty Images)

Switzerland’s Simona Meiler competes in the ladies’ snowboard cross quarterfinals.  (Franck Fife / AFP/Getty Images)

France’s Chloe Trespeuch competes in the ladies’ snowboard cross seeding runs.  (Franck Fife / AFP/Getty Images)

Snowboarders compete in the ladies’ snowboard cross final.  (Javier Soriano / AFP/Getty Images)

Ashley Caldwell of the United States competes in the freestyle skiing ladies’ aerials qualifications.  (Mike Ehrmann / Getty Images)

Emily Cook of the United States practices before the freestyle skiing ladies’ aerials qualifications.  (Cameron Spencer / Getty Images)

Emily Cook of the U.S. crashes during the ladies’ freestyle skiing aerials finals.  (Mike Blake / Reuters)

Joss Christensen of the U.S. performs a jump during the men’s freestyle skiing slopestyle qualification round.  (Dylan Martinez / Reuters)

Gus Kenworthy of the U.S. performs a jump during the men’s freestyle skiing slopestyle qualification round.  (Lucas Jackson / Reuters)

Nicholas Goepper of the U.S. performs a jump during the men’s freestyle skiing slopestyle qualification round.  (Dylan Martinez / Reuters)

Gus Kenworthy of the U.S. performs a jump during the men’s freestyle skiing slopestyle finals.  (Lucas Jackson / Reuters)

Joss Christensen of the U.S. performs a jump during the men’s freestyle skiing slopestyle finals.  (Dylan Martinez / Reuters)

Kaitlyn Farrington of the U.S. performs a jump during the women’s snowboard halfpipe finals.  (Mike Blake / Reuters)

Kaitlyn Farrington of the United States competes in the women’s snowboard halfpipe qualification heats.  (Cameron Spencer / Getty Images)

Shaun White of the U.S. crashes in the men’s snowboard halfpipe finals.  (Mike Blake / Reuters)

Kaitlyn Farrington of the United States competes in the snowboard women’s halfpipe qualification heats.  (Cameron Spencer / Getty Images)

Kelly Clark of the U.S. performs a jump during the women’s snowboard halfpipe finals.  (Carlos Barria / Reuters)

American Kelly Clark competes in the women’s snowboard halfpipe qualifications.  (Javier Soriano / AFP/Getty Images)

American Kelly Clark competes in the women’s snowboard halfpipe qualifications.  (Franck Fife / AFP/Getty Images)

Taylor Gold of the U.S. falls during the men’s snowboard halfpipe semi-final event.  (Lucas Jackson / Reuters)

American Shaun White competes in the men’s snowboard halfpipe qualifications.  (Dimitar Dilkoff / AFP/Getty Images)

Taylor Gold of the U.S. performs a jump during the men’s snowboard halfpipe qualification round.  (Mike Blake / Reuters)

American Gregory Bretz lands during the men’s snowboard halfpipe qualifications.  (Dimitar Dilkoff / AFP/Getty Images)

American Shaun White competes in the men’s snowboard halfpipe qualifications.  (Franck Fife / AFP/Getty Images)

Gregory Bretz of the U.S. crashes during the men’s snowboard halfpipe semi-final event.  (Lucas Jackson / Reuters)

Danny Davis of the U.S. performs a jump during the men’s snowboard halfpipe qualification round.  (Dominic Ebenbichler / Reuters)

Devin Logan of the U.S. competes in the ladies’ ski slopestyle qualifications.  (Tobias Hase / EPA)

Russia’s Sergey Volkov falls in the men’s freestyle skiing moguls qualifications.  (Franck Fife / AFP/Getty Images)

Canada’s Philippe Marquis competes in the men’s freestyle skiing moguls qualifications.  (Javier Soriano / AFP/Getty Images)

Patrick Deneen of the United States competes in the men’s moguls finals.  (Cameron Spencer / Getty Images)

Patrick Deneen of the U.S.performs a jump during the men’s freestyle skiing moguls finals.  (Dylan Martinez / Reuters)

Patrick Deneen of the U.S. performs a jump during the men’s freestyle skiing moguls finals.  (Mike Blake / Reuters)

Mikael Kingsbury of Canada competes in the men’s moguls finals.  (Cameron Spencer / Getty Images)

Bradley Wilson of the U.S. performs a jump during the men’s freestyle skiing moguls qualification round.  (Dylan Martinez / Reuters)

Bradley Wilson of the United States competes in the men’s moguls qualifications.  (Cameron Spencer / Getty Images)

Karly Shorr of the United States competes in the women’s slopestyle snowboard finals.  (Paul Gilham / Getty Images)

Jamie Anderson of the United States competes in the women’s slopestyle snowboard finals.  (Cameron Spencer / Getty Images)

Finland’s Enni Rukajarvi competes in the women’s slopestyle snowboard finals.  (Franck Fife / AFP/Getty Images)

Ty Walker of the United States competes in the women’s slopestyle snowboard semifinals.  (Cameron Spencer / Getty Images)

American Sage Kotsenburg performs a jump during the men’s slopestyle snowboard semi-final.  (Lucas Jackson / Reuters)

American Heather McPhie performs a jump during the women’s freestyle skiing moguls qualification round.  (Mike Blake / Reuters)

American Sage Kotsenburg competes in the slopestyle snowboard final.  (Javier Soriano / AFP/Getty Images)

Sage Kotsenburg of the U.S. performs a jump in the men’s slopestyle snowboard semi-final.  (Lucas Jackson / Reuters)

Switzerland’s Lucien Koch competes in the men’s slopestyle snowboard semi-finals.  (Franck Fife / AFP/Getty Images)

Sweden’s Niklas Mattsson competes in the slopestyle snowboard final.  (Franck Fife / AFP/Getty Images)

The Czech Republic’s Nikola Sudova competes in the women’s freestyle skiing moguls qualifications.  (Javier Soriano / AFP/Getty Images)

American Jamie Anderson performs a jump during the women’s slopestyle snowboard qualifying session.  (Dylan Martinez / Reuters)

American Karly Shorr performs her last jump in the women’s slopestyle snowboard qualifying session.  (Mike Blake / Reuters)

American Ryan Stassel performs a jump during the men’s slopestyle snowboarding qualifying session.  (Dylan Martinez / Reuters)

American Jessika Jenson falls during the women’s slopestyle snowboard qualifications.  (Javier Soriano / AFP/Getty Images)

American Jessika Jenson performs her last jump in the women’s slopestyle snowboarding qualifying session.  (Mike Blake / Reuters)

Junko Hoshino of Japan competes in women’s moguls qualifications.  (Ryan Pierse / Getty Images)

American Hannah Kearney performs a jump in the women’s freestyle skiing moguls qualification round.  (Lucas Jackson / Reuters)