The Detroit Red Wings have signed defenceman Niklas Kronwall to a $15-million, five-year contract extension. He will earn $1.5 million in 2007-08, $3 million in 2008-09, $3.25 million in 2009-10, $3.5 million in 2010-11 and $3.75 million in 2011-12. The 25-year-old Stockholm native had three assists in 16 games this season heading into Friday's game against St. Louis. He has two goals and 15 assists in 63 career NHL games. Kronwall, who was limited to 27 games last year after suffering a serious knee injury, was Detroit's first pick, 29th overall, in the 2000 NHL entry draft.