( CNN ) -- Defending champion Marc Marquez took an early stranglehold on this year 's MotoGP title race by leading a Honda one-two at the Circuit of Americas in Texas Sunday . Marquez , who won the season-opener in Qatar , dominated practice and qualifying and was untroubled in the race proper , winning by nearly five seconds . Teammate Dani Pedrosa finished second , nearly five seconds adrift , with Ducati 's Andrea Dovizioso completing the podium . Marquez , who broke his leg in an accident a month before the season , has a maximum 50 points from two races with Pedrosa on 36 points . MotoGP legend Valentino Rossi , who claimed a promising second in Qatar , could only manage eighth in America on his Yamaha , struggling with grip on his front tires . Rossi 's teammate , two-time world champion Jorge Lorenzo of Spain , had to make a jump start from fifth on the grid and he finished 10th after a ride through penalty . Stefan Bradl finished fourth on his Honda with rookie Bradley Smith in a fine fifth ahead of Yamaha teammate Aleix Espargaro . Earlier , Spain 's Maverick Vinales won his first career Moto2 race and Australian teenager Jack Millerw took his second successive victory in Moto3 .
Marc López wins U.S. Championship in 2014 . Second straight win at Circuit of Americas for title holder . Repsol Honda teammate Dani Pedrosa finishes second . Marquez two wins from two in the final standings .