The Blackhawks are, statistically, one of the worst defensive teams in the NHL. They've allowed the second-most shots on goal per game (34.9), the second-most scoring chances per game (30.9), most high-danger chances at even strength per game (14.1) and second-most goals per game (3.60).
But they've had their best stretch on the defensive side of things under Jeremy Colliton over the last week and a half.
In the last four games, the Blackhawks have given up only five goals at 5-on-5 and have limited the high quality scoring chances allowed during 5-on-5 play to 6.2 per game, according to naturalstattrick.