Sebastian Vettel calimed his sixth pole position of the season when he ran fastest in qualifying for the Canadian Grand Prix.
The Red Bull Racing driver posted a time of 1:13.014 while his team-mate Mark Webber was fourth fastest after problems with the KERS system on his RB7 forced him to miss the third practice session.
Only Ferrari were able to split the Red Bull pair, Fernando Alonso securing third place ahead of Felipe Massa. The Spaniard was just two tenths adrift of Vettel's pole time.
Red Bull team boss Christian Horner commented: "Sebastian had a phenomenal drive. It was a close call as to whether we should post one or two laps. In the end, one was enough, but Ferrari were close."
McLaren drivers Lewis Hamilton and Jenson Button had to settle for fifth and seventh place while Mercedes also joined the fray towards the end of the session with Nico Rosberg able to put at least one McLaren behind him to start from P6. Michael Schumacher finished in eighth place, which puts him ahead of the two Lotus Renault GP drivers.
Nursing tyres was the name of the game in Montreal and nine of the top 10 drivers were able to qualify for Q3 using only one set of tyres. Paul di Resta missed moving into the crucial qualifying segment by 0.3 seconds, but the Force India driver once again outpaced his team-mate, Adrian Sutil.
Alguersuari, Trulli, Kovalainen, Liuzzi, Glock, Karthikeyan and D'Ambrosio exited early in Q1. D'Ambrosio failed to qualify for the race, as his lap time of 1:18.989 minutes is above the 107 percent mark. The decision as to whether the Virgin driver may participate is a matter for the stewards.