Daniel Ricciardo secured his maiden Formula 1 pole position, and Red Bull’s first since 2013, with a stunning lap during qualifying for the Monaco Grand Prix.
Ricciardo surged clear at the top of the timesheets with a lap of 1:13.622 on his first effort in Q3, which remained unbeaten for the remainder of the session.
Ricciardo will start the race on the Super Soft tyres, rather than the faster Ultra Softs, after posting his best Q2 lap on that compound.
Mercedes will start from second and third on the grid, with Nico Rosberg ahead of Lewis Hamilton.
Ricciardo's Red Bull team-mate, Max Verstappen, will start from the back row of the grid after crashing out of the session.
Mercedes encountered drama at the start of Q3 when both Rosberg and Hamilton encountered an engine issue, the Briton having to be wheeled back to his garage from the end of the pit lane.
The pair were able to re-join the action, with Hamilton looking set for pole after setting the fastest time through the first sector on his sole flying lap, before maintaining a slender advantage through the second sector.
However, his final sector was significantly slower than Ricciardo, and he was unable to beat the Australian's benchmark.
Rosberg, following Hamilton, had already placed his Mercedes second on his initial effort and while he improved on his final run, he remained 0.169s behind Ricciardo.
Sebastian Vettel was fourth for Ferrari, almost a second adrift of Ricciardo, as he was unable to convert his encouraging practice pace in Q3.
Force India’s Nico Hülkenberg will start from fifth place on the grid following a fine lap in the VJM09, as he chases his first points since the season-opening round in Australia.
Kimi Räikkönen placed sixth but will drop to 11th on account of a grid penalty for a gearbox change.
Carlos Sainz Jr. will therefore start sixth for Toro Rosso, ahead of Sergio Pérez, Daniil Kvyat and Fernando Alonso, who made it into Q3 once more for McLaren.
Neither Williams driver made it through to Q3, with Valtteri Bottas in 11th and Felipe Massa back in 14th spot.
They were split by Esteban Gutiérrez and Jenson Button, while Romain Grosjean was 15th in the other Haas.
Kevin Magnussen was half a second adrift of Grosjean in Q2 but is under investigation for entering the track while the red light was showing during Q1.
Marcus Ericsson missed out on a slot in Q2 by just 0.046 as he finished in 17th place, ahead of Renault driver Jolyon Palmer, who suffered his fifth successive Q1 exit.
Manor finished over 0.7s down on nearest rival Palmer, with Rio Haryanto putting his previous Monaco experience to good use by edging out team-mate Pascal Wehrlein for 19th place.
Max Verstappen caused a red flag in Q1 when he clipped the inside wall at Piscine, damaging his right front suspension in the process.
Verstappen’s trajectory took him into a second impact on the outside of the corner, where his RB12 sustained further damage.
Felipe Nasr was unable to set a time in Q1 as the Ferrari engine in his Sauber let go in spectacular fashion on his out lap, with plumes of smoke trailing from the rear of his C35.