‘“Obviously, my rookie year being in the NHL, the first thing I wanted to do was just prove I can play at this level, show that I was responsible defensively,” Cozens said following practice Friday in KeyBank Center. “Once I kind of showed that, I think I want to take the next step in my offensive game. Obviously, I’ve had a lot of things going on this season, but I’ve been able to watch a lot of games and just learn from watching. I’m happy where my game is at right now.”’