The Michigan Wolverine hockey team didn't back down from North Dakota's normally swarming offensive barrage, and goalie Kevin Hunwick did everything but stand on his head.  The Wolverines will play for the national title.  Michigan’s Ben Winnett's first-period goal gave the defensive-minded Wolverines the only offense they needed and Hunwick made 40 saves for his fourth shutout this season in a 2-0 victory over North Dakota on Thursday night in the NCAA semifinals.  The Wolverines will move on the championship game of the Frozen Four where they will face the Minnesota Duluth Bulldogs.