Washington Capitals left wing Alex Ovechkin (8), of Russia, celebrates his goal with T.J. Oshie (77) during the second period of the team's NHL hockey game against the Boston Bruins, Wednesday, Oct. 3, 2018, in Washington. (AP Photo/Nick Wass)
Washington Capitals left wing Alex Ovechkin (8), of Russia, celebrates his goal with T.J. Oshie (77) during the second period of the team's NHL hockey game against the Boston Bruins, Wednesday, Oct. 3, 2018, in Washington. (AP Photo/Nick Wass) Credit: Nick Wass

Washington — Alex Ovechkin and the Stanley Cup champion Washington Capitals opened their title defense with a 7-0 thrashing of the Boston Bruins on Wednesday night.

After watching the franchise’s first Stanley Cup banner ascend to the rafters, T.J. Oshie opened the scoring just 24 seconds in, and Evgeny Kuznetsov scored the first of his two goals 1½ minutes later to get the rout off to a fast start. It was the fastest first two goals by a defending champion in a season opener in NHL history — and it was just the beginning.

By midway through the second period, the Capitals chased goalie Tuukka Rask with five goals on 19 shots and ignited chants of “Back-to-back! Back-to-back!” from the fired-up crowd. Braden Holtby stopped all 25 shots he faced to improve to 15-2 with four shutouts against the Bruins.

The emotional banner ceremony featured montages from the Capitals’ playoff run and ensuing celebrations and a roar when Ovechkin carried the freshly engraved Cup onto the ice and skated a lap with it. Minutes after Ovechkin kissed the Cup and put it back in its box, he and his teammates blew away any concern about an emotional letdown and began making a statement that they want to win it back.

In Todd Reirden’s first game as coach, the Capitals beat the Bruins for the 13th consecutive time, this time without Tom Wilson. Washington’s top-line right winger began his 20-game suspension for another illegal check to the head of an opponent in a preseason game.

The Capitals have outscored the Bruins, 48-19, during this winning streak.

Ovechkin scored one of four power-play goals, Kuznetsov scored his second on the power play and John Carlson beat Boston backup Jaroslav Halak on a 5-on-3 advantage. Newcomer Nic Dowd joined the fun with a spinning back-hander, and Cup-clinching goal-scorer Lars Eller added the exclamation point with the seventh of the night.

Rask fell to 1-11-5 in his career against the Capitals with a 3.30 goals-against average and .889 save percentage that are each the second-worst of any opponent. Only two goals came against Halak, whose presence on banner night in Washington was poetic after his performance for Montreal in the 2010 playoffs ended one of the Capitals’ previous best chances to win a championship.

Notes: The Capitals set a team record for goals in an opener. … Washington C Nicklas Backstrom became the third player in franchise history to reach 800 points. … With D Torey Krug out three weeks with an ankle injury, Matt Grzelcyk took his spot on Boston’s first power-play unit. The Bruins got only two power-play chances.

Up Next: The Bruins visit Buffalo tonight in No. 1 pick Rasmus Dahlin’s debut for the Sabres.

Maple Leafs 3, Canadiens 2 (ot)

Toronto— Auston Matthews scored his second goal of the game in overtime, John Tavares scored his first goal for Toronto and the Maple Leafs beat Montreal in the opener for both teams.

Matthews took a feed from Patrick Marleau and beat goalie Carey Price 1:01 into the extra period.

Frederik Andersen stopped 34 shots, and Nazem Kadri had two assists for the Maple Leafs.

Artturi Lehkonen and Andrew Shaw scored for Montreal, and Price made 23 saves. Max Domi, the son of former Leafs tough guy Tie Domi, had two assists in his first game for the Canadiens.

Montreal’s Jesperi Kotkaniemi, the first NHL player born in the 2000s, picked up an assist. The Finn, who turned 18 in July, also became the second-youngest player in Canadiens’ history to score a point.