OAKLAND, California, (AFP) - Golden State signed guard Monta Ellis to a multi-year National Basketball Association contract here Thursday after a breakout season for the Warriors by the 22-year-old speedster.

Ellis averaged career bests of 20.2 points and 5.0 rebounds as well as 3.4 assists and 1.5 steals over 81 games last season for a player who has made steady progress since jumping from high school to the NBA in 2005.

"We're absolutely thrilled to have Monta under contract for the next several years," Warriors executive vice president Chris Mullin said.

"He has been one of the top young players in the NBA for the last two years and enjoyed a tremendous season last year. The growth that he has demonstrated at such a young age is incredible and we look forward to him playing a big part in our future success."

Ellis, who was named the NBA's Most Improved Player in 2007, will take on greater responsibility because star guard Baron Davis has departed to join the Los Angeles Clippers.