Marquez claims fourth straight Texas win

Honda's MotoGP leader Marc Marquez won the Grand Prix of the Americas for the fourth year in a row on Sunday while bitter rival Valentino Rossi was one of several riders who crashed. Spain's Marquez was again in a race of his own at the Circuit of the Americas track, starting on pole position for the fourth successive year and pulling away after a brief tussle on the opening lap with Yamaha's Jorge Lorenzo. World champion Lorenzo finished second, 6.107 seconds behind his compatriot, and Italian