Barzal gave the Islanders a 1-0 lead at 16:38 when he intercepted Washington forward Tom Wilson’s pass across the slot, then turned and beat Stevenson with a glove side wrist shot.
The Capitals took the lead with two goals in 31 seconds early in the second period.
Fehervary evened the score 1-1 at 5:29. He worked a give-and-go with Wilson, took the return pass in the slot and scored on a snap shot through a screen set by Aliaksei Protas in front. Fehervary, who did not play in Washington's 4-3 overtime win against the Carolina Hurricanes on Saturday, missed the game due to the birth of his first child.
“Really special,” Fehervary said. “Score one right after I miss the game because of [the birth of] my daughter, so I feel really amazing.”
Beauvillier gave the Capitals a 2-1 lead at 6:00 when he controlled a loose puck behind the net, deked one way and then stuffed the puck in at the right post on the wraparound.
“I thought we had a really good first period until they scored those two quick goals in less than 30 seconds, and then for some reason it affected us,” Islanders coach Patrick Roy said. “But we had a couple breakaways where we could’ve gotten back in that game and their goalie made some good saves.”