The winner Jessica Diggins, right, and teammate Kikkan Randall of the United States celebrate after finishing the Ladies 6x1.2 km Free Team Sprint at the Nordic Ski World Championships in Val di Fiemme,Italy, Sunday Feb.24,2013. (AP Photo/Armando Trovati) VAL DI FIEMME, Italy (AP) - United States duo Jessica Higgins and Kikkan Randall stormed to victory in the team sprint at the Nordic World Championships on Sunday, winning by nearly eight seconds. The U.S. pair finished the 6x1.2-kilometer event in 20 minutes and 24.4 seconds, beating Swedish defending champions Charlotte Kalla and Ida Ingemarsdotter by 7.8 seconds. Finland's Riika Sarasoja-Lilja and Krista Lahteenmaki were third, 10.9 seconds behind the Americans. One of the pre-race favorites Norway finished fourth after Ingvild Flugstad Oestberg fell. In the men's 6x1.5-kilometer event, Alexei Petukhov and Nikita Kriukov of Russia beat Sweden's Marcus Hellner and Emil Joensson by 0.4 seconds to win in 21:30.9. Kazakhstan duo Nikolay Chebotko and Alexey Poltoranin won a photo finish for bronze, edging out defending champions Canada by 0.03 seconds.