While the Islanders managed to only allow one goal - minus the empty-netter - to a high-octane Capitals team, the Isles felt their game was out of sync through the first two periods.
The Islanders were credited with 15 giveaways, the sixth time they'd hit that mark all season, and had trouble at times getting through the neutral zone against an aggressive and tight-checking Caps team.
"I was disappointed with the result and a little disappointed with our execution," Associate Coach Lane Lambert said. "I didn't think we made a lot of plays, and weren't handling the puck the way we could, should, or normally would."
Washington's first goal was the product of a miscommunication in the Islanders zone, as three players converged on Aliaksei Protas, leaving Wilson open in the slot. Wilson beat Varlamov stick side at 4:35.
Still, despite some looser-than-usual play through 40 minutes, the Islanders were still within striking distance heading into the third period, where their execution was much sharper.
"I don't think it was our best game overall," Isles Captain Anders Lee said. "The third period is where they put the pressure on pretty good, but at the end of the day it's a one-goal game, Varly gave us a great chance and a great opportunity and we come up short at the end. We understand we could have played a lot better early on, but we played good enough to have a chance at the end."