Keith Gabel of the US competes during the men's para-snowboard cross, standing event at the 2014 Winter Paralympic, Friday March 14, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dmitry Lovetsky)
Evan Strong of United States celebrates his victory in the men's para snowboard cross, standing event at the 2014 Winter Paralympic, Friday, March 14, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dmitry Lovetsky)
Amy Purdy of United States celebrates her 3rd place in the women's para snowboard cross, standing event at the 2014 Winter Paralympic, Friday, March 14, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dmitry Lovetsky)
Amy Purdy of United States competes during women's para-snowboard cross, standing event at the 2014 Winter Paralympic, Friday, March 14, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dmitry Lovetsky)
Amy Purdy of United States competes during the women's para snowboard cross, standing event at the 2014 Winter Paralympic, Friday, March 14, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dmitry Lovetsky)
Amy Purdy of United States competes during women's para snowboard cross, standing event at the 2014 Winter Paralympic, Friday, March 14, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dmitry Lovetsky)
Ben Tudhope of Australia competes during the men's para-snowboard cross, standing event at the 2014 Winter Paralympic, Friday, March 14, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dmitry Lovetsky)
Ben Tudhope of Australia competes during the men's para-snowboard cross, standing event at the 2014 Winter Paralympic, Friday, March 14, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dmitry Lovetsky)