Six-times MotoGP champion Marc Marquez continued his perfect start to life with factory Ducati as he completed a weekend double at the season-opening Thailand Grand Prix on Sunday, finishing ahead of younger brother Alex Marquez.

I cannot ask for more' - "Yesterday I was happy, today I am super happy," said Marc Marquez. "For one moment I thought I might hold on to win," said Alex Marquez.

Marc Marquez marked his Ducati debut with an impressive victory on Sunday at the Chang International Circuit in Thailand becoming the first rider since Casey Stoner in 2007 to win on their Ducati debut.

Marc Marquez outdueled his brother in a strategic masterclass to claim victory on his debut with the factory Ducati MotoGP team in the Thailand Grand Prix. Polesitter Marquez purposefully sat behind Gresini’s Alex Marquez for a large section of the race and made the decisive move on him with four laps to run to claim what was an otherwise comfortable 1.

Six-time world champion Marc Marquez won the season-opening Thai MotoGP on Sunday to complete a dominant debut weekend at his new factory Ducati team, having also romped to Saturday's sprint.The Spanish great took the 26-lap grand prix by 1.

Spain's Marc Marquez completed a double with victory in the opening race of the MotoGP season at the Thailand Grand Prix. The 32-year-old six-time former champion won Saturday's sprint race at the Buriram International Circuit in his first competitive outing for his new team Ducati and started Sunday's race as pole-sitter.