David Steckel threw his fists at Pittsburgh's Mike Rupp back in the first period, and at the end of the second period, he threw his body at Pens' star Sidney Crosby.
With the play winding down as the period came to an end, Steckel caught him in the head with a shoulder. It was a blindside hit and Crosby never saw it coming, although to say Steckel did it on purpose would be a weak accusation.
Crosby was slow to get up and he was given some attention from the trainer as the Penguins shuffled off to the locker room. He skated off on his own power and looks to be alright.
Here's the video: