Formula One championship leader Nico Rosberg put Mercedes on pole position for the Canadian Grand Prix with team mate Lewis Hamilton second.
The pole was the seventh in seven races for Mercedes who have won every grand prix this season.
Four-time world champion Sebastian Vettel qualified third fastest, getting the better of young Red Bull teammate Daniel Ricciardo who starts from sixth on the grid.
Two weeks after his controversial pole at the Monaco Grand Prix, Rosberg drove with flawless control to edge beyond his team-mate and nearest title rival by just 0.079 seconds.
The 28-year-old German secured his second successive pole, his third this year and the seventh of his career with a best lap time of one minute and 14.874 seconds.