France claimed a clean sweep of the podium places in the men's ski cross final as world champion Jean-Frederic Chapuis took the Winter Olympic title.
Chapuis finished ahead of compatriots Arnaud Bovolenta, who took silver, and Jonathan Midol, the bronze medallist.
Canada's Brady Leman was the only competitor who could prevent a French one-two-three in the four-man final but he crashed out on the penultimate jump.
Andreas Matt, the 2010 silver medallist, went out in the quarters.
There was further drama in another of the quarter-finals as three of the skiers - Egor Korotkov, Victor Norberg and Jouni Pellinen - all fell on the final jump and slid across the line together behind heat winner Armin Niederer.
It needed a photo to determine that Russia's Korotkov had claimed the second semi-final spot behind the Dutchman. Both men, though, failed to reach the final.