Brandon Saad scored his first two goals of the post-season, and Chicago earned its sixth consecutive win despite stretches of lacklustre play in the second and third periods. Corey Crawford made 18 saves in another solid performance.
Cody McCormick scored his second career playoff goal, but Minnesota missed another chance to steal home-ice advantage from the defending Stanley Cup champions.
The series opener was tied at 2 in the third period before Patrick Kane scored two of Chicago's final three goals in a 5-2 victory on Friday night.
I remember the first time at Wrigley Field all of us had the long johns, the turtlenecks and the extra equipment because we were afraid of being cold. Halfway through the first period everybody's ripping everything off and we just ended up wearing what we would normally wear for a game at the United Center.
— Chicago Blackhawks forward Patrick Sharp on the 2009 Bridgestone NHL Winter Classic