WASHINGTON — T.J. Oshie, Nicklas Backstrom and Matt Niskanen scored as the Washington Capitals swept a home-and-home set against the skidding New York Islanders with a 6-3 win on Friday night.

Alex Chiasson had a goal and two assists for the Capitals, who hammered the Islanders 7-3 in New York on Thursday. Jakub Vrana’s goal gave Washington a 5-1 lead with 9:04 remaining. Lars Eller added an empty-netter, and Braden Holtby made 22 saves.

Washington broke a tie with the idle Pittsburgh Penguins for sole possession of first place in the Metropolitan Division.