Evgeny Svechnikov gave the Sharks a 1-0 lead at 2:54 of the first period, scoring short side from the left face-off circle on a rush after Washington forward Lars Eller turned the puck over in the neutral zone.
"I think the way the game started for myself, that first goal, I think you know, that didn't set the team up, didn't put them in a good spot," Lindgren said. "Obviously, that's one [save] I want to have, and once you're down 1-0, you're trying to battle back."
Barabanov made it 2-0 with a power-play goal at 9:04 of the second period. Karlsson's deflection of Hertl's shot from the point was blocked in front by Washington's Trevor van Riemsdyk, but Barabanov knocked the loose puck past Lindgren for his third goal in four games.
Kuznetsov pulled Washington to within 2-1 at 16:56. He lost the puck, regained it at the bottom of the right circle, and scored as he skated across the crease.
It was after the shot that Kuznetsov collided with Kahkonen.
"I thought that goal was gonna give us momentum, but unfortunately it wasn't so," Kuznetsov said. "Tough loss, and I believe that this game, this result, will make us better for sure."