Antonio Cairoli imposed his flair and talent over this latest round of the series by winning an entertaining duel with brand-mate and local hope Mike Alessi; the pair tackling this first USGP this century on their works KTM 350s. Cairoli, favouring the Scorpion MidSoft 32 front and rear for the ripples and ruts of Glen Helen, won a fantastic first moto in which he tussled with Alessi and eventually emerged victorious even though he lost his gear lever and was stuck in third gear for the last third of the race. In Moto2 he again fought with Alessi and third place was enough to secure his third win of the season. Also with Scorpion MidSoft 32 and on the podium was Clement Desalle, whose third spot overall helped elevate him to the same rank in the world championship standings. In the top ten were other Pirelli riders; Steve Ramon (5th), Ken De Dycker (6th), Davide Guarneri (7th) and Max Nagl (10th).