SAO PAULO—Rubens Barrichello won the pole position for his hometown Brazilian Grand Prix, emerging from Saturday’s chaotic, rainy qualifying as the only Formula One contender in the top 10 on the grid.

Brawn GP teammate and championship leader Jenson Button will start in 14th place and Red Bull’s Sebastian Vettel in 15th. Both drivers struggled in a qualifying session which was interrupted twice by red flags and delayed several times because of treacherous track conditions at Interlagos.

Button can clinch the title by finishing third or better in today’s race.

The 37-year-old Barrichello finished in 1 minute, 19.576 seconds under extremely wet conditions on the 2.6-mile track, 0.092 seconds ahead of Red Bull’s Mark Webber and 0.336 in front of Force India’s Adrian Sutil.

Toyota’s Jarno Trulli will start fourth after a lap of 1:20.097, and Ferrari’s Kimi Raikkonen fifth after posting 1:20.168.