TORONTO -- Alex Tanguay figures he's quieted the critics for a little while.
Tanguay was the biggest name added to Montreal's lineup over the summer and is one of the reasons a team that finished first in the Eastern Conference last year is expected to challenge for that title again.
That's why he was especially thrilled to get his first goal and points in a Canadiens uniform out of the way.
"It's nice before we get home," Tanguay said. "I know how the media in Montreal can be as far as pressure's concerned and you guys are probably familiar with that here too in Toronto."
Sergei Kostitsyn scored twice and added an assist, and Roman Hamrlik, Alex Kovalev and Guillaume Latendresse also had goals for the Canadiens, coming off a 2-1 shootout loss at Buffalo on Friday night. Captain Saku Koivu added three assists.
Tanguay is coming off a tough season in Calgary, where he didn't feel he was used properly by coach Mike Keenan. At his request, the Flames dealt him to Montreal during the entry draft in June.
He's still adjusting to life with a new team and looking to find a rhythm.
"A lot of thing's been said when we made the trade for him," Canadiens coach Guy Carbonneau said. "I think he didn't really enjoy the year last year and wanted to kind of have a rebound year. He knew he was coming to a good team.
"Because he was injured a little bit in pre-season (with a hip problem), he didn't have a chance to really get that timing back and get that chemistry with Saku (Koivu). Those two guys have too much talent to be out of that scoring sheet for a long time. Tonight it showed."
Jason Blake scored for Toronto.
Montreal blew open the game early in the second period. The Canadiens scored three power-play goals -- two off Kostitsyn's stick and the other from Tanguay -- during a 5:28 stretch to take a 5-0 lead.
"We took way too many penalties and our penalty-killing didn't work," Leafs forward Niklas Hagman said. "Up against a team like that, if we start running around, they're going to make plays."
Tanguay assisted on both of Kostitsyn's power-play goals.
"We put him on the point on the power play -- he has good vision," Carbonneau said. "He went to the net a couple times a couple times and got a bunch of points. Hopefully, he'll keep going."
The teams traded chances early in the first period before the Canadiens started to take control. Hamrlik and Kovalev beat goalie Vesa Toskala just 1:39 apart for a 2-0 lead at 12:39 of the first period.
After Montreal added the three quick power-play goals in the second period, Canadiens goalie Jaroslav Halak had all the cushion he needed.
"I knew that they would be ready to play (after losing on Friday)," Toronto coach Ron Wilson said.
Blake got the Leafs on the scoreboard with a power-play goal at 11:02 of the second, but Latendresse replied for Montreal only 22 seconds later to make it 6-1.
- Twenty Canadian medallists from the Beijing Olympics took part in the ceremonial puck drop.
- Chris Higgins (groin), Georges Laraque (groin) and Francis Bouillon (knee) each missed a second straight game for Montreal.
- Toronto's Jeff Finger (foot) and Ryan Hollweg (suspension) also sat out.
- Habs forward Tom Kostopoulos played his 300th NHL game.
- It was just the fourth time Toronto has faced Montreal in its home opener since 1970.