It was unclear exactly when Wilson was hurt, though he got tangled up with the Penguins’ Marcus Pettersson and went sliding hard into Pittsburgh goaltender Tristan Jarry and the net during the second. Wilson skated three more shifts but did not come back for the third.
The 27-year-old from Toronto is tied for third on the team in scoring with 24 points (nine goals and 15 assists) in 26 games this season.
Wilson was the second Capitals player to leave the game due to injury. Defenceman Martin Fehervary was hit in the head by Penguins forward Brock McGinn during the second period and returned to the locker room. No penalty was called on the play.
The Penguins held on to defeat the Capitals 4-2.
— With files from The Associated Press.