LOS ANGELES – The Chicago Blackhawks raised their own Stanley Cup championship banner just two seasons ago, so their core players already know it’s tough to go back to work after a pregame party.

When the Los Angeles Kings were finished raising their banner and receiving their rings Saturday, the Blackhawks reminded the champs that what happened last year won’t help the Kings in this shortened NHL season.

Marian Hossa had two goals and an assist, Corey Crawford made 19 saves, and Chicago crashed the Kings’ Stanley Cup celebration with a 5-2 victory.

Captain Jonathan Toews and Patrick Kane each had a goal and an assist for the Blackhawks, who jumped to a 3-0 lead on Michael Frolik’s goal less than 15 minutes in.

With superior speed and skill, Chicago ruined the festivities shortly after the Kings hung their first championship banner in the Staples Center rafters.

“We wanted to have a good start, and whether they were going to be on their game or not didn’t really matter to us,” said Toews, the Conn Smythe Trophy-winning hero of Chicago’s 2010 title run.

“We tried not to focus on what was going on out there before the game. We were in (the locker room), just getting ready and doing our thing. We had a great first period, and when you come out in the first 20 minutes like that, you want to keep it going, and that’s what we did.”

With every player who touched the ice in last season’s playoffs returning to defend the title, the Kings received their championship rings during a stirring pregame ceremony that included each player passing the Cup around the boards. The Blackhawks didn’t watch it, but they seemed fired up from the opening faceoff.

“The season after you win the Cup, everyone is going to play their best game against the Cup champion, because that’s the game where you want to prove yourselves and make a statement,” said Kane, whose 5-on-3 goal started the rout. “So I think that’s what we were kind of feeling today.”

PENGUINS 3, FLYERS 1: In Philadelphia, Tyler Kennedy and James Neal scored goals to lead Pittsburgh.

Claude Giroux scored for the Flyers.

Chris Kunitz added an empty-netter in the final seconds for the Penguins.

SENATORS 4, JETS 1: In Winnipeg, Manitoba, Erik Karlsson had a goal and two assists as Ottawa spoiled the Winnipeg’s home opener.

Milan Michalek, Kyle Turris and Chris Neil, with the game-winner in the second period, scored Ottawa’s other goals.

Dustin Byfuglien scored for the Jets, whose fans didn’t miss a beat with loud cheers and chants of “Go, Jets, Go” that began during warmups.

DEVILS 2, ISLANDERS 1: In Uniondale, N.Y., David Clarkson’s goal at 8:17 of the third period sent New Jersey to the victory.

Travis Zajac also scored for the Devils. Martin Brodeur stopped 18 shots to increase his NHL wins record to 657.

Travis Hamonic had New York’s goal, a power-play score at 7:12 of the third. Evgeni Nabokov made 26 saves for the Islanders.

Islanders coach Jack Capuano missed the game “due to medical reasons.”

The effects of the 119-day lockout and compacted training camp were evident in the season opener for both teams. Emotion was decidedly lacking save for two brief instances, and passes and shots were not as crisp as they would be at the same point in an 82-game season.

BRUINS 3, RANGERS 1: In Boston, Tuukka Rask stopped 20 shots to lead Boston in his first game after taking over for two-time Vezina Trophy winner Tim Thomas.

Milan Lucic and Daniel Paille scored for Boston, which won the Northeast Division last year before losing in the first round of the playoffs. Rask backed up Thomas during the Bruins’ 2011 Stanley Cup run and inherited the job when the enigmatic goalie decided to take a year off to rest.

Brad Richards scored for the Rangers on an assist from Rick Nash, the former Columbus star who was New York’s biggest offseason acquisition. Henrik Lundqvist made 31 saves for the Rangers.

LIGHTNING 6, CAPITALS 3: In Tampa, Fla., Martin St. Louis and Eric Brewer each scored two goals to lead Tampa Bay. St. Louis added an assist, while Vincent Lecavalier and Cory Conacher also scored goals for the Lightning.

Joel Ward scored twice and Wojtek Wolski also had a goal for the Capitals, who lost in Adam Oates’ NHL coaching debut.

PANTHERS 5, HURRICANES 1: In Sunrise, Fla., Jonathan Huberdeau had a goal and two assists in his NHL debut, and Brian Campbell scored twice in a first-period frenzy to lead Florida.

MAPLE LEAFS 2, CANADIENS 1: In Montreal, Nazem Kadri and Tyler Bozek scored power-play goals to lead Toronto.