Rosberg (L) and Nakajima
Nico Rosberg and Kazuki Nakajima have been retained by Williams for next year's Formula One Championship.
Also staying with the team is German youngster Nico Hulkenberg - leader of the Formula 3 Euroseries - who will continue to act as test driver for a second straight year.
Team principal Frank Williams was delighted to maintain his current driving stable and believes all three men have bright futures in the sport.
"I am delighted we are able to maintain continuity with our drivers going into 2009," Williams stated.
"Nico Rosberg continues to be one of the most capable drivers in the sport. Kazuki is getting stronger all the time and has more to offer and Nico Hulkenberg is developing well."
Rosberg, who has been driving for Williams since 2006, celebrated a career-best second place last weekend at the Singapore Grand Prix. It was the German's second career podium after a third at the Australian GP at the beginning of the season.
He finished 17th overall in 2006, ninth last year and currently sits 12th in the championship this time around with a total of 17 points.
Nakajima made his F1 debut in the final race of 2007 and has taken points in four of the 15 races so far this year, leaving him 15th with nine points.

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