Button won the Canadian GP

Jenson Button snatched a sensational victory at a rain-affected Canadian Grand Prix on Sunday as world champion Sebastian Vettel made a mistake on the final lap in Montreal.

The German had been poised to claim his sixth victory in seven Formula One races this season after avoiding the earlier chaos behind him, but locked his wheels at a corner to let 2009 world champion Button to complete remarkable fightback.

The English driver had an early collision with Lewis Hamilton that ended his McLaren teammate's race, and received a drive-through penalty for speeding while the safety car was out.

Then, following a delay of more than two hours due to a downpour, Button suffered a punctured tire after a collision with Ferrari's Fernando Alonso that resulted in Spain's two-time world champion crashing into a wall -- and the incident will be investigated by race stewards.

"Even if I hadn't won I would have enjoyed this race immensely, but it's a win, definitely my best," Button told reporters.

"I'm definitely going to be celebrating. I'll have a good night and enjoy what I achieved. A big thank you to the team for what they've done."

butto with girl friend

Button moved up to second place in the drivers' standings, 60 points behind Vettel, whose Red Bull teammate Mark Webber denied seven-time world champion Michael Schumacher his first podium finish since returning from retirement last year.

Hamilton, who dropped to fourth overall, was also involved in an early incident with Webber in the fifth lap soon after the safety car departed.