Pacioretty scored on a snap shot at 8:18 for a 1-0 lead. McMann pushed it to 2-0 on a shot from the right face-off circle at 11:29, and Lorentz made it 3-0 on a backhand from the slot at 14:46.
"[Berube] likes a little more old school, and it's a winning formula," Lorentz said. "You look back at the winning teams of the past, you have gifted players who can make plays and those guys are going to do their thing, but he also wants big bodies and guys who can skate and create that energy and the identity of the team.
"That's the kind of style that does well in the playoffs, and if you want a long season, guys are going to do that. Our bottom-six forwards were happy to do stuff like that."
Bratt cut it to 3-1 with a power-play goal at 19:18 of the first, scoring on a shot from the high slot.
Tavares made it 4-1 at 14:52 of the second period, skating between Dawson Mercer and Simon Nemec in the slot before scoring on a wrist shot.
"We want to play a heavy game. Wear teams down, force turnovers and be strong around their net," Tavares said. "We talk a lot about winning net fronts, and that certainly showed in the first period."