"They were playing pretty passive, I think, after we got a look or two," Oshie said. "So [Carlson] made a good read and just threw the puck in. I got a tip on it, but it hit their skates and it was just kind of laying there. You just swipe it and try and get it elevated. No idea exactly where it's going though."
Carlson prevented the Islanders from taking the lead 2:12 earlier when he swatted Brock Nelson's backhand shot away from the goal line after the puck trickled past Samsonov.
"Our defense is probably the area that has seen the most change over the last couple of years," Capitals coach Todd Reirden said. "Being without a couple of key leaders and guys that had been here for a while, it's up to some new guys, whether it's (defenseman Radko) Gudas, who we've added, or some young players, stepping up in different roles.
"Obviously, it hasn't been perfect, but there's a reason that the shot totals are down, and that's a five-man effort. But I thought in particular our defense is doing a strong job."
Vrana gave Washington a 1-0 lead at 10:25 of the first period with a wrist shot from the right face-off circle. It was his second goal in as many games.