Giroux made it 2-0 at 3:28 of the second period when he dove to one-time in a rebound on a power play.
Ridly Greig
, who was making his NHL debut, had the primary assist.
"He's fun to play with," Giroux said of Greig. "His game is very mature. I remember my first game, mentally I wasn't very there, so it's pretty impressive the way he was playing and winning puck battles. We had a good time."
Greig, who was selected by Ottawa in the first round (No. 28) of the 2020 NHL Draft, said he idolized Giroux growing up.
"It was unreal," Greig said. "You know, obviously a dream come true, just to get out there and obviously to get the win. It's pretty good."
Greig finished with a game-high eight shots in 13:46 of ice time.
"He looked unreal, honestly," Pinto said. "That two-way game, we're going to need that, and he stepped up big for us tonight, and to play that kind of game in your first NHL game is awesome. Very happy for him."
Nelson cut it to 2-1 at 16:07 of the second. He got to a loose puck during a scramble in front, cut to the slot and scored blocker side on Forsberg.
"[Varlamov] played really well and we didn't help him out," Nelson said.
NOTES:Nelson has four points (three goals, one assist) during a four-game point streak. … Ottawa defenseman Nikita Zaitsev had two shots and two hits in 16:47 of ice time in his return after missing 12 games with a lower-body injury.