Hainsey possibly concussed after blocking Ovechkin's shot with his head.

Ron Hainsey just came back in the Pens lineup, but he may be injured again following tonight's sequence. 

Late in the third, with his team comfortably ahead 5-2, Hainsey tried to block Ovechkin's shot. However, the shot was way off and he received it right on the head. 

By his reaction, we obviously understand it was painful. However, Ovechkin's wristers are among the fastest in the league. It could very well end in a concussion. 

We will stay on top of this story and relay information as soon as available.