Updated

Denver, CO (SportsNetwork.com) - Jean-Sebastien Giguere posted 29 saves as the Colorado Avalanche gave head coach Patrick Roy a 4-1 win against his old team the Montreal Canadiens on Saturday.

Gabriel Landeskog had a goal and an assist while PA Parenteau, Nathan MacKinnon and Ryan O'Reilly all lit the lamp for the Avalanche, who have won six straight after suffering their only loss of the season on Oct. 17 against Detroit.

"They came out hard tonight and the first period was tough for both teams," said Landeskog. "They're fast and have good players up front. I'm just glad we settled down after that first period."

Roy had spent his first 10-plus seasons with Montreal, which drafted him in the third round of the 1984 draft. He won a pair of Conn Smythe trophies and Stanley Cups while with Montreal before being traded to Colorado in December of 1995, winning a pair of Stanley Cups with the Avalanche and an NHL-record third Conn Smythe trophy.

"We just played another notch up in the third period," said Roy. "It's fun to see things working out here as well as they are. This game meant a lot to the guys and it meant a lot to me."

Peter Budaj gave up three goals on 30 shots while Brendan Gallagher had the only goal of the game for the Canadiens, who have dropped their past two games.

"It was a tough night out there for all of us," said Budaj. "The third period was real hard and they just kept coming at us."

Following a pre-game ceremony that saw former Avalanche defenseman Adam Foote have his No. 52 jersey retired, the teams played a scoreless first period.

Colorado went on top at the 11:14 mark of the second period as Landeskog grabbed the puck in the neutral zone and quickly skated down the left wing before blasting a shot to the short side for his fifth of the year.

Skating on the power play in the third, Montreal tied the game as P.K. Subban fired a shot on net from the high slot that was stopped, but Gallagher was in front to jam home the rebound at 3:38.

The Avs, though, took the lead less than five minutes later as a snap shot by Landeskog at the left wing saw the rebound go out front and MacKinnon backhand it in for his second of the season.

A turnover behind the Montreal net was picked up by O'Reilly, who skated around the right side and wristed it home for a 3-1 lead with 8:29 to play.

Parenteau scored with the net empty in the final minute to seal the win.

Game Notes

Foote's jersey was the fifth retired by Colorado, joining Roy, Joe Sakic, Peter Forsberg and Ray Bourque ... Giguere had a shutout streak of 122 minutes, 23 seconds broken up by Gallagher ... Montreal was 1-for-3 on the power play while Colorado was 0-for-2 ... Colorado hosts Nashville on Wednesday ... Montreal hosts St. Louis on Tuesday.