Duncan Keith broke a tie midway through the second period, and the Chicago Blackhawks defeated the Detroit Red Wings 2-1 in a preseason game at United Center.Brandon Hagel scored, and Corey Crawford made 23 saves for Chicago.Taro Hirose scored a power-play goal for Detroit. Jonathan Bernier saved 10 of 11 shots in 30:05; Filip Larsson made 16 saves.Keith scored off a pass from Patrick Kane at 10:55 of the second.