Crutchlow scores big win at Aust MotoGP

LCR Honda rider Cal Crutchlow scored a big win at the Australian MotoGP after new world champion Marc Marquez crashed while leading.

British star Cal Crutchlow has romped to a big win at the Australian MotoGP at Phillip Island. (AAP)

British star Cal Crutchlow has romped to a big win at the Australian MotoGP at Phillip Island.

The LCR Honda rider started second behind pole-sitter Marc Marquez, but took over the lead when the newly crowned world champion crashed out with 18 laps to go.

Nine-time world champion Valentino Rossi (Movistar Yamaha) was second and Maverick Vinales (Team Suzuki Ecstar) third, with local hope Jack Miller finishing 10th after starting in fifth position on the grid.