Ovechkin opened the scoring at 8:10 of the first period with Washington’s first power-play goal of the series. Mike Knuble tied it at 2 with the Capitals’ second shorthanded goal in two games with 6.3 seconds left in the second.

Ovechkin added his second, and fourth in three games, to put Washington up, 3-2. Jason Chimera made it 4-2 52 seconds later.

The Capitals got empty-net goals from Knuble with 2:27 left and Nicklas Backstrom with 10.1 seconds remaining.

Semyon Varlamov made 36 saves to win his third in a row for Washington, which regained home-ice advantage in the quarterfinal series with a 5-1 victory in Game 3 Monday night.

Carey Price stopped 32 shots in his first start of the series for Montreal. Price, who replaced Jaroslav Halak in the second period Monday, was penalized for unsportsmanlike conduct when he fired a puck toward the Capitals celebrating Chimera’s goal.

Price drew another unsportsmanlike conduct minor following Backstrom’s goal.

Canucks 6, Kings 4 — Henrik Sedin scored the go-ahead goal with 2:52 to play, and Vancouver scored four times in a wild third period to even its first-round series with host Los Angeles at two games apiece.

Mikael Samuelsson, Sami Salo, and Ryan Kesler also scored in the final 12:31 for the Canucks, who rallied from three one-goal deficits.

After Salo put Vancouver ahead with 7:44 left, Wayne Simmonds answered 1:02 later. Sedin then got loose on a rush and beat Jonathan Quick.