O'Reilly put Nashville up 1-0 with a power-play goal at 4:21 of the second period. Svechkov's centering pass popped to O'Reilly at the edge of the crease, and O'Reilly chipped a backhand by Wolf's blocker.
He pushed it to 2-0 at 11:37 with another power-play goal after Andrei Kuzmenko was penalized for playing with a broken stick. Wolf made the initial save on a slap shot from Forsberg from the point, but Jonathan Marchessault passed the rebound into the slot to O'Reilly, who shot it into the net.
"It feels good," O'Reilly said. "The first one, 'Fil' makes a great play at the blue, holds onto it and 'Svech' comes in and just taps it. I'm just going to the net. Nothing fancy, just try to snap it at the net and lucky for me it went in. Second one, too. Guys make a good play. Just hanging out in the right spot and it comes out to me and I bang it home. It's nothing too fancy, but it's the bounces that we needed."
Backlund cut the lead to 2-1 at 18:22 with a slap shot from just inside the right face-off circle that beat Annunen's glove.
Matt Coronato hit the post on a wrist shot from the high slot 35 seconds after Backlund's goal.
"I think if we continued the way we were in the first we could've done a better job, but it's all part of the learning," Coronato said. "Just try to keep getting better and be a more consistent team."