Mark Webber of Red Bull posted the quickest lap in an abbreviated and wet final practice session Saturday at the Canadian Grand Prix.
Webber's best lap at 4.361-kilometre Circuit Gilles Villeneuve was one minute 17.895 seconds.
Adrian Sutil of Force India was second fastest at 1:18.248, followed by defending race champion Lewis Hamilton's Mercedes at 1:18.732.
Ferrari's Fernando Alonso was next in 1:18.977, Formula One leader Sebastian Vettel of Red Bull was fifth in 1:19.131 and Nico Rosberg of Mercedes was sixth in 1:19.457.
The scheduled one-hour session was reduced to 30 minutes so a barrier along the track could be repaired after a crash during a support race.
That ate up some valuable information-gathering time for the 11 teams ahead of the early-afternoon qualifying session.
Most of the top drivers waited until the final five minutes to go onto the track.
Rosberg, a wire-to-wire winner at Monaco two weeks ago, will be seeking a fourth straight pole position.
The track was wet from overnight rain and a few drops were still falling as the cars went out. Warmer weather with a only a small chance of rain is forecast for the race on Sunday.
Race stewards announced that Webber and Valtteri Bottas of Williams were reprimanded for ignoring a yellow flag during practice on Friday. The flag went up after Pastor Maldonado crashed his Williams.