The 2015 Lucas Oil Pro Motocross Championship kicked off with a vist to Hangtown. Defending 450 Class champion Ken Roczen - riding through injury - had an up-and-down day, but Eli Tomac was nothing short of dominant throughout both motos. In the 250 Class, two of this year's top title contenders - Marvin Musquin and Jeremy Martin - got their seasons off to great starts.