Mark Webber of Red Bull set the pace in the first practice session for the Brazilian Grand Prix on Friday.
Webber clocked 1 minute, 13.811 seconds at the 4.3-kilometer (2.6-mile) Interlagos track, ahead of McLaren duo Jenson Button, 0.014 back, and Lewis Hamilton, 0.150 behind.
Webber's teammate Sebastian Vettel, who has already clinched the drivers' title, was fourth fastest.
With the title decided, the Brazilian GP on Sunday features the fight for second place, with Button, Ferrari's Fernando Alonso and Webber still in with a chance to finish runner-up.
Alonso had the sixth-fastest time, but couldn't complete the session because of an apparent mechanical failure with about five minutes left.