Hamilton left the ice in the first period when he reportedly collided with Maple Leafs defenseman Carl Gunnarsson. His last shift came with 4:58 left in the first period. He didn't return to the bench for the remainder of the period, and it wasn't until the end of the first intermission that the Bruins announced he wouldn't return for the rest of the game.
It's another huge blow for an already depleted Bruins squad. On Saturday, the Bruins lost Loui Eriksson (concussion), Chris Kelly (broken ankle) and Shawn Thornton (suspension). They're already without Johnny Boychuk for an extended period of time. It's the fifth time this season that a Bruins defenseman has gone down with an injury.
Hamilton is enjoying a nice season with 7 points and a plus-9 rating.