Defending champion Seth Wescott comes from behind to pip Canadian Mike Roberston on the line to retain his Olympic crown with victory in a thrilling men's snowboard cross final at Cypress Mountain.
The women's event take place on Tuesday evening (qualification from 1800 GMT, final 2040).
Britain's Zoe Gillings is an outside chance of a medal.
Re-live the spectacular 2006 women's snowboard cross final when Lindsey Jacobellis threw away gold by showboating on the last jump (UK users only)
Available to UK users only