The visiting St-Louis Blues dominated the Bruins in a 5-1 win with Joel Hofer making 34 saves, snapping a three-game skid. Kasperi Kapanen and Robert Thomas helped set the pace for the Blues in the opening period.
The Bruins were unable to keep up as the Blues added two more goals in the middle frame before David Pastrnak scored for Boston in the third period.
St Louis sealed the win with an empty-net goal by Alexey Toropchenko.