Mercedes driver Lewis Hamilton, centre, is congratulated by Ferrari driver Sebastian Vettel after Hamilton won the pole for the Formula One US Grand Prix at the Circuit of the Americas in Austin, Texas. Vettel is starting second. Darron Cummings / AP Photo
Mercedes driver Lewis Hamilton, centre, is congratulated by Ferrari driver Sebastian Vettel after Hamilton won the pole for the Formula One US Grand Prix at the Circuit of the Americas in Austin, TexaShow more
United States Grand Prix: Lewis Hamilton not expecting to be crowned F1 world champion in Austin
Championship leader sits on pole but says unless rival Vettel makes a 'silly mistake' at the Circuit of the Americas his wait for a fourth world crown will continue
