Pittsburgh won its fifth in a row and moved closer to clinching the No. 1 seed in the Eastern Conference. Montreal fell back into a tie with Boston for the Northeast Division lead after the Bruins picked up a point in a shootout loss to Buffalo.
Morrow scored the second of Pittsburgh's three first-period goals and he added a tally 4:07 into the middle stanza.
'Happy' fan videos make Pharrell cry [VIDEO]
Pistorius testifies he didn't consciously pull trigger when he shot girlfriend