Soft tyres grip Hamilton to Canada pole

Lewis Hamilton cracked Red Bull's run of qualifying dominance on Saturday by securing pole position for the Canadian grand prix.

But the McLaren driver was using a different tyre in the decisive Q3 segment -- the fragile 'option' or softer compound, as opposed to the harder 'prime' fitted to the next-best Red Bulls of Mark Webber and Sebastian Vettel.

The three prior practice sessions at the Circuit Gilles Villeneuve proved that Bridgestone's products are struggling this weekend; particularly the option.