Jacob Markstrom made 37 saves for his second shutout of the season, Johnny Gaudreau and Mikael Backlund scored, and the Calgary Flames handed the Montreal Canadiens their first regulation loss of the season, 2-0 on Saturday night.

The Flames improved to 3-3-1, snapping a three-game losing streak that included a 4-2 loss to the Canadiens on Thursday night. Montreal dropped to 5-1-2.

Jake Allen made 31 saves for the Canadiens.

Calgary Flames' Johnny Gaudreau (13) celebrates with teammate Matthew Tkachuk (19) after scoring against the Montreal Canadiens during first-period NHL hockey game action in Montreal, Saturday, Jan. 30, 2021. (Graham HughesThe Canadian Press via AP)

Calgary Flames' Johnny Gaudreau (13) celebrates with teammate Matthew Tkachuk (19) after scoring against the Montreal Canadiens during first-period NHL hockey game action in Montreal, Saturday, Jan. 30, 2021. (Graham HughesThe Canadian Press via AP)

Gaudreau opened the scoring on a power play at 3:34 of first period with his fifth of the season.

Backlund scored into an empty net with 34 seconds left.

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Flames: At Winnipeg on Monday, Tuesday and Thursday nights.

Calgary Flames' Andrew Mangiapane (88) moves in on Montreal Canadiens goaltender Jake Allen during first-period NHL hockey game action in Montreal, Saturday, Jan. 30, 2021. (Graham HughesThe Canadian Press via AP)

Calgary Flames' Andrew Mangiapane (88) moves in on Montreal Canadiens goaltender Jake Allen during first-period NHL hockey game action in Montreal, Saturday, Jan. 30, 2021. (Graham HughesThe Canadian Press via AP)

Canadiens: Host Vancouver on Monday and Tuesday nights.

Calgary Flames' Milan Lucic (17) moves in on Montreal Canadiens goaltender Jake Allen as Canadiens' Ben Chiarot defends during second-period NHL hockey game action in Montreal, Saturday, Jan. 30, 2021. (Graham HughesThe Canadian Press via AP)

Calgary Flames' Milan Lucic (17) moves in on Montreal Canadiens goaltender Jake Allen as Canadiens' Ben Chiarot defends during second-period NHL hockey game action in Montreal, Saturday, Jan. 30, 2021. (Graham HughesThe Canadian Press via AP)

Montreal Canadiens' Jonathan Drouin (92) moves in on Calgary Flames goaltender Jacob Markstrom as Flames' Mikael Backlund defends during second-period NHL hockey game action in Montreal, Saturday, Jan. 30, 2021. (Graham HughesThe Canadian Press via AP)

Montreal Canadiens' Jonathan Drouin (92) moves in on Calgary Flames goaltender Jacob Markstrom as Flames' Mikael Backlund defends during second-period NHL hockey game action in Montreal, Saturday, Jan. 30, 2021. (Graham HughesThe Canadian Press via AP)