Nico Rosberg enjoyed a 'positive start' to the F1 2011 Canadian Grand Prix weekend today.

Rosberg was quickest in the opening practice session in his Mercedes GP W02 and while he was only 18th in FP2, with the squad apparently focusing 'exclusively on high-fuel race preparation', his time from the first session - a 1m 15.591s - was still good enough to leaving him third in the overall times.

"It was a positive start to the weekend, and we seem to have made some progress with our race pace. I felt comfortable with the car today and we completed a lot of laps despite the interruptions, which was good," he said.

"The tyres are holding up well so it will be interesting to see the comparison once we start working on low fuel tomorrow. Overall, I'm quite happy."

Michael Schumacher meanwhile was similarly competitive in FP1 and was third overall. He eventually finished the day eleventh on the combined times.

"We covered quite a lot of work today," Schumacher said. "Obviously we didn't do any times on lower fuel and just concentrated on high fuel due to the red flags shortening our programme this afternoon.

"That's why we are at the opposite end of the timesheets to this morning, when it looked encouraging for a weekend that we did not enter with the highest expectations.

"We will now sit and analyse our performance and hope for another encouraging day tomorrow."

"We've had a good day to start our Canadian Grand Prix weekend," summarised Mercedes GP team principal, Ross Brawn. "Today's running was obviously interrupted with the various incidents, however we have focused very much on our race preparation, particularly this afternoon. The loss of track time meant that we did not complete any low fuel running, but from our long run work, the car looks reasonable."