Germany's Sebastian Vettel has put Red Bull on pole position for the Turkish Grand Prix after pushing Formula One leader Jenson Button off his pedestal in the final seconds of qualifying.
Button's Brawn GP team mate Rubens Barrichello will start third in a race that looks like a duel between the two teams with Red Bull's Australian Mark Webber completing the second row.
The pole was Vettel's career third and established the 21-year-old as favourite at a circuit where the winner has always started from the top slot since the first race in Turkey in 2005.
Button, who had been going for his third pole in a row after winning five of the season's six races, acknowledged that history favoured the man on pole position.
Car weights published by the governing FIA showed that Vettel had qualified with two to three laps less fuel in his car than Button, with the Red Bull tipping the scales at 649.5kg and the leading Brawn at 655.5.
Button was fuelled to go longer than Barrichello (652.5kg) while Webber's car weighed in at 656.0kg.
Italian Jarno Trulli qualified fifth for Toyota, a boost for the Japanese team after a dismal Monaco Grand Prix weekend, with Ferrari's 2007 world champion Kimi Raikkonen alongside him.
Ferrari's Brazilian Felipe Massa, who is chasing his fourth successive Turkish Grand Prix after taking pole position for the past three years, qualified seventh.
McLaren's world champion Lewis Hamilton had another difficult afternoon and will start 16th after failing to make it through the first qualifying session for the second race in succession.