Lewis Hamilton finds fourth world title hard to take in after drama in Mexico

Lewis Hamilton said it felt unreal to become Formula One champion for a fourth time following a dramatic Mexican Grand Prix in which he collided with rival Sebastian Vettel on the opening lap.

Hamilton finished only ninth following an explosive turn-three incident, after which the British driver asked if Vettel had deliberately crashed into him.

The championship rivals both sustained damage in the collision as Hamilton's Mercedes limped back to the pit lane with a right-rear puncture while Vettel stopped for repairs to his Ferrari's broken front wing.