Sidney Crosby and Kris Letang scored for the Penguins (23-26-9), who have lost three of four. Alex Nedeljkovic allowed five goals on 14 shots before being pulled in the second; Joel Blomqvist made 14 saves in relief.
“We beat ourselves in so many ways,” Pittsburgh coach Mike Sullivan said. “When they got their fourth goal, it was a 3-2 game, I think it was 5:43 (remaining) in the second period, the shots were 19-9. We had twice as much offensive-zone time as we did in the defensive zone. We felt pretty good about where the game was at, even though we were down a goal.
“Then, we chased offense. And when you chase offense, and you don’t have a recognition of risk-reward, you end up giving your opponents easy offense. As a result, that’s what we get.”
Ethen Frank put Washington ahead 1-0 at 5:13 of the first period, when a pass from Andrew Mangiapane went in off his skate.
Letang tied it 1-1 on the power play at 18:21 with a one-timer from the left face-off circle. It ended a 21-game goal drought since Dec. 14.
Fehervary gave the Capitals a 2-1 lead at 1:10 of the second period with a wrist shot from the slot off a pass from Duhaime.
Crosby scored his 18th goal this season and fifth in six games, tying it 2-2 at 6:36 on a backhand. He was a game-time decision after playing a fourth game for Canada in the 4 Nations Face-Off on Thursday. He missed Pittsburgh’s final two games before the break because of an upper-body injury.
“It was definitely discussed, as far as how I felt and that sort of thing,” said Crosby, the Penguins captain. “But I want to play. And if I can play, I'm going to play. It's pretty clear-cut. Either you can or you can't."