Jaden Schwartz ended up with his third career hat trick to help the Blues beat the Chicago Blackhawks 5-2 on Wednesday night.
Vladimir Tarasenko had a goal and an assist, Kyle Brodziak also scored, and Jake Allen made 22 saves, including a dazzling stick save on Patrick Kane who was wide open on the side of the net midway through the third period.
Duncan Keith and Ryan Hartman had late goals for Blackhawks, and Corey Crawford made 28 saves.
St. Louis outshot Chicago 26-8 in the first two periods, including 17-4 in the second. The four shots in each of the first two periods were a season low for the Blackhawks in a period.
Blackhawks television analyst Eddie Olczyk, who is battling colon cancer, received a standing ovation from the crowd of 18,752 after being recognized late in the first period. Olczyk was back in the booth for the first time since his diagnosis in August.
The Blackhawks host Edmonton on Thursday night while the Blues are at Colorado on Thursday night.