The Washington Capitals scored in the opening minute of the game and twice in the last 1:02 of the second period to pull away to a 6-2 victory over the Tampa Bay Lightning and a 2-0 lead in the Eastern Conference final.
Evgeny Kuznetsov and Lars Eller each had a goal and two assists.
Alex Ovechkin and Tom Wilson had a goal and an assist apiece.
Devante Smith-Pelly and Brett Connolly also scored for the Caps, who took the first two games of the best-of-seven matchup on the road.
Since 1974-75, teams that take a 2-0 lead in the conference final or semifinal have a series record of 39-2 (95.1 per cent).
Game 3 is tomorrow night in Washington.
Braden Point and Steven Stamkos had power-play goals for Tampa Bay, which rebounded after falling behind on Wilson's goal 28 seconds into the game.