The overlooked fourth member of the male US contingent at the Vancouver Olympics, Greg caused an upset in December 2013 when he beat Shaun White in the Dew Tour pipe – making him the first guy to look down at Shaun on the podium in four years.
His time at the five rings has been mixed – after comfortably qualifying for the final in both 2010 and 2014, he placed dead last in both events when his runs became unstuck. Elsewhere he’s a mainstay of the World Cup circuit, ever a challenger for the podium.