Video: Sundqvist runs Grzelcyk's head into the glass

Late in the first period of Game 2 of the Stanley Cup Final, St. Louis Blues forward Oscar Sundqvist absolutely BURIED Boston Bruins forward Matt Grzelcyk from behind, running Grzelcyk's head directly into the end glass.

It was an ugly hit that earned Sundqvist a... a two minute minor!? WTF!?\

Check it out:

A two minute minor!? Hitting from behind, targeting the head... call it whatever you want but that's a DIRTY hit. Paging NHL Player Safety...

UPDATE: Grzelcyk is not on the ice or the bench to start the second period.