Shane Pinto also scored for the Senators (21-23-3), who snapped a two-game losing streak with the victory. Anton Forsberg, who stopped 22 shots, was called into action in the second period after Cam Talbot, who made 14 saves, left the game with an injury.
Trailing by one goal the Islanders pushed hard for the equalizer with Sorokin on the bench, but Forsberg made a couple of big saves to salvage the win.
Both teams exchanged goals in the second, but the Islanders were able to finish the period with a bit of momentum.
Ottawa took a 2-0 lead with a power-play goal early in the period.
Giroux saw a rebound coming his way and dove to get a shot off and managed to beat Sorokin for his second point of the game. Ridly Greig, making his NHL debut, picked up the primary assist on the play.
Talbot pulled himself from the game near the halfway mark and the team announced he had suffered a lower body injury.
Forsberg faced a couple early shots and the Islanders managed to cut the lead in half late in the period when Nelson scored from the slot.
The Senators held a 1-0 lead after the first.
Pinto picked up his 12th of the season tipping a Giroux shot seconds after the power play expired.
Ridley Greig, who made his NHL debut Wednesday night, is the son of retired NHL forward Mark Greig who played 125 games for the Hartford Whalers, Toronto Maple Leafs, Calgary Flames and Philadelphia Flyers from 1990-2003.
Ottawa F Mark Kastelic missed the game with an undisclosed injury. Nikita Zaitsev will return after missing 12 games with a lower-body injury … The Islanders are riding a five-game losing streak (0-3-2) and president and GM Lou Lamoriello says he takes full responsibility. "There's no excuses,” Lamoriello told reporters. “Because it's on me, totally on me. That's my responsibility to make us the best we possibly can, to make whatever changes we can. That's not on the coaching staff, that's not on the players, and I take that responsibility.”
The Senators host the Montreal Canadiens Saturday night, while the Islanders will host Detroit on Friday.
This report by The Canadian Press was first published Jan. 25, 2023.
Lisa Wallace, The Canadian Press