‘“Those types of hits have got to be out of our game,” Nolan said Tuesday morning before the Sabres faced the Detroit Red Wings at First Niagara Center. “You’re not talking injuries where you knock a guy out for a week or two weeks. It can knock his career right off the tracks. We all see what concussions do to some of our athletes after the fact. It’s a very serious thing, and I think we’ve got to take it a lot more serious than four games.”’