Mark Webber and Red Bull teammate Sebastian Vettel admitted they struggled to find the right strategy as they finished off the podium in the Canadian Grand Prix won by British driver Lewis Hamilton.
Australian Webber battled to seventh while world champion Vettel praised his team's late decision after a last minute pit stop helped the German to salvage fourth place in Montreal yesterday.
McLaren driver Hamilton's victory made it a record seven different winners from seven formula one races this season.
Frenchman Romain Grosjean of Lotus was second after a well-judged race with Mexican Sergio Perez of Sauber third.
Two-time champion Fernando Alonso of Ferrari was fifth while German Nico Rosberg of Mercedes was sixth.
Webber said he went into the race expecting a challenging tactical battle and acknowledged the pit strategy adopted ended up working against him.
''I knew it was going to be mixed up today, but not that mixed up,'' Webber said.
''In the first 10 laps, we had a small issue with the engine which we had to manage, but then I settled into the pace. We pitted and came out behind the one-stoppers.
''It's hard to get it right here - if you push to try and pass you kill the tyres but if you wait, then you find you're on the same strategy and finish behind them anyway.
''With hindsight we could have done a different strategy, but it's easy to say that now and I've had worse days than today.''
Red Bull team boss Christian Horner said in Webber's case it was clear earlier on that they needed to go to a two-stop strategy.
''But unfortunately the one-stoppers managed to get ahead,'' Horner said. ''So, a tactical race, a tricky race, but nonetheless we have still managed to salvage respectable points.''
Hamilton produced a superbly judged race to seize his first win of the year.
It was his 18th career victory after his triumphs in 2007 and 2010 and hoisted him back into serious contention for the drivers' title in a year of unpredictable results.
''I was thinking they [Vettel and Alonso] were falling behind and I assumed they were doing a one-stop so I decided to keep pushing,'' Hamilton said.
''We had a couple of problems during the stops … but otherwise it was a great race.''
Hamilton leads the drivers' standings with 88 points with Webber fourth on 79. AFP