Barre-Boulet gave the Lightning a 1-0 lead at 13:32 of the first period. Anthony Cirelli found Brandon Hagel skating into the slot, and Hagel fed Barre-Boulet for a one-timer in the right face-off circle.
“I think we were getting guys to the net, but we just weren’t recovering the puck,” Hagel said. “… If you’re going to do that all night you’re not going to have second chances and have the goalie scrambling. It was kind of one of those nights.”
Juuso Parssinen tied it 1-1 on the power play at 17:14. McDonagh’s shot bounced off Predators forward Philip Tomasino and went to Parssinen, who scored with a one-timer in the slot.
Forsberg gave Nashville a 2-1 lead with a power-play goal at 2:37 of the second period, scoring on a wrist shot from the top of the right circle.
“Two big goals coming from each unit,” Predators forward Tommy Novak said. “I thought we worked it around pretty well. Our entries were solid. It was a really big special-teams game for us. Probably the game-changer, so it was nice for us to get those two goals.”