‘“He really helped me understand more about the pro life, how the pros have to play the game and what you have to do to get to the next level, the way you carry yourself on and off the ice,” Marchand said Thursday prior to scoring twice in the Bruins’ 4-2 loss against the Sabres inside the First Niagara Center. “I took so much away from playing for him. I don’t think I’d be here today if he didn’t coach me that year.”’