The Montreal Canadiens swept past the Tampa Bay Lightning, setting up a second-round date with either Boston or Detroit.
Capitals center Jay Beagle began the season as a healthy scratch. He ended it as a top-six forward.
Home teams have been dominating their opponents though the first week of the Stanley Cup playoffs.
Nicklas Backstrom was tied with Alex Ovechkin with a team-high 79 points, but he was a liability 5-on-5.