The Lucas Oil AMA Pro Motocross Championship returned to action on Saturday with the Rockstar Energy Southwick National presented by Traxxas, Round 10 of the 12-race season, from Moto-X 338 in Southwick, Mass. Keeping up with the dominating trend he's set this season, Rockstar/Makita Suzuki's Ryan Dungey, of Belle Plaine, Minn., raced to his ninth consecutive 450 Class victory by sweeping the day's motos and in the process, secured the premier class title with two rounds remaining. In the..Full Story