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CHICAGO (Reuters) - Key defenseman Brent Seabrook has agreed to a five-year contract extension with the Chicago Blackhawks, the defending Stanley Cup champions said Sunday.

Financial terms were not announced, but local media reported the deal worth $29 million.

The agreement enables Chicago to keep under contract through 2014 many of the key players from their 2010 championship run.

"Brent is a very important member of our organization and we are looking forward to him being part of a core group that will be a contender for many years to come," Blackhawks general manager Stan Bowman said in a statement.

The 25-year-old Seabrook, a member of the Blackhawks for his entire six-season NHL career, has four goals and a career-high 29 assists this season.

"He's a physical presence back there and (along with Duncan Keith) was really instrumental in us winning the Cup," Blackhawks coach Joel Quenneville told reporters.

(Reporting by Gene Cherry in Salvo, North Carolina. Editing by Steve Ginsburg)