Nico Rosberg has admitted that it will be difficult for him to win tomorrow's race at the Bahrain Grand Prix.
The 27-year-old told reporters: "We worked really well last night to improve the car because on Friday we were really struggling and the result is just fantastic.
"It is going to be a tough race with rear degradation. For sure the completion is going to be tough and it's difficult to say if we have enough pace to win the race but a lot can still happen.
"The first three races have been a really rough and today was the first normal qualifying so I just want to kick-start my season in the race."
Rosberg's only previous pole position was at last year's Chinese Grand Prix, which he went on to win.