Holtby made 27 saves for his ninth shut-out of the campaign, equalling the franchise record set by Jim Carey in 1995-96, while matching Montreal’s Carey Price and Pittsburgh’s Marc-Andre Fleury for the most this season. It was also Holtby’s 41st win of the season, trying the franchise record set by Olie Kolzig in 1999-00.
Marcus Johansson added a goal and an assist for the Capitals, who are three points ahead of the New York Islanders in the battle for second place in the Metropolitan Division and home advantage in the first round of the play-offs. Boston still hold the second wild card in the Eastern Conference.
The Anaheim Ducks have already secured their play-off place, which will take the sting out of a 4-0 loss to the Dallas Stars.
Patrick Eaves scored twice and Jordie Benn registered for the first time in three months for Dallas, who have won 13 of their last 18 games but left it too late to make the post-season themselves.
Sergei Bobrovsky made 35 saves for his second shut-out of the season as the Columbus Blue Jackets beat the Toronto Maple Leafs 5-0.