Rosberg delighted with best F1 result yet

The Williams driver finished in sixth position, although a late charge almost meant he caught Red Bull's David Coulthard, who was having gearbox problems.

Rosberg's race was made difficult after his drinks' bottle stopped working, but the German kept his concentration and managed to score three more points.

"It was a good race and there's no doubt we got the balance right, especially in the middle stint, when I was really able to push on fresh tyres," said Rosberg.

"Thanks to the team for the strategy and the perfectly timed pitstops. My only problem was that my drinks' bottle didn't work and I couldn't take in any fluids during the race at all so it was really tough, not just because I was thirsty, but in terms of concentration, especially towards the end.

"This is the best result I've had in F1 so far, and that's a great feeling. Trying to catch up with Coulthard at the end of the race was exciting, but I really needed a couple more laps to get him. Three points are great and I am happy that everything came together for us today."

Rosberg has scored all of Williams' points so far this year, after Alex Wurz endured another poor race.

The Austrian made contact with Ralf Schumacher on the opening lap and his car was too damaged to continue.

"A short race, and really just not the best weekend for me," he said. "I had a good start and overtook a few guys, but then I was lined up behind Ralf going into turn 10 and he suddenly had to lift for someone in front.

"It's such close racing out there so I had zero chance to react and ended up on his wheel. It proved the end of my race. I'm disappointed that I could not show my race pace, but you can count on me in Monaco."