Mark Giordano had a goal and an assist and the Calgary Flames beat Vancouver 3-1 on Thursday night for the Canucks' sixth straight loss.

Jacob Markstrom had 33 saves to help Calgary open the four-game series against Vancouver with its third victory in a row. Andrew Mangiapane and Johnny Gaudreau also scored, and Sean Monahan had two assists.

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Vancouver Canucks center Bo Horvat (53) fights for control of the puck with Calgary Flames defenseman Noah Hanifin (55) during the second period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Mark Giordano had a goal and an assist and the Calgary Flames beat Vancouver 3-1 on Thursday night for the Canucks' sixth straight loss.

Calgary Flames defenseman Nikita Nesterov (89) defends as Vancouver Canucks right wing Brock Boeser (6) shoots onFlames goaltender Jacob Markstrom (25) during the second period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

The Canucks pulled Demko for an extra attacker with more than two minutes on the clock, but couldn’t get the puck past their former goaltender.

Calgary Flames left wing Andrew Mangiapane (88) vies for control of the puck with Vancouver Canucks left wing Tanner Pearson (70) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Calgary Flames left wing Andrew Mangiapane (88) vies for control of the puck with Vancouver Canucks left wing Tanner Pearson (70) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks defenseman Alexander Edler (23) tries to stop Calgary Flames center Sam Bennett (93) from getting a shot on Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks defenseman Alexander Edler (23) tries to stop Calgary Flames center Sam Bennett (93) from getting a shot on Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks defenseman Jordie Benn (8) tries to stop Calgary Flames left wing Matthew Tkachuk (19) from getting a shot on Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks defenseman Jordie Benn (8) tries to stop Calgary Flames left wing Matthew Tkachuk (19) from getting a shot on Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Calgary Flames center Sam Bennett (93) tries to get a shot past Vancouver Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Calgary Flames center Sam Bennett (93) tries to get a shot past Vancouver Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center Adam Gaudette watches as Calgary Flames left wing Milan Lucic (17) tries to get a shot past Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center Adam Gaudette watches as Calgary Flames left wing Milan Lucic (17) tries to get a shot past Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center Adam Gaudette (96) and Calgary Flames center Mikael Backlund (11) watch the puck during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center Adam Gaudette (96) and Calgary Flames center Mikael Backlund (11) watch the puck during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center J.T. Miller (9) fights for control of the puck with Calgary Flames center Elias Lindholm (28) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center J.T. Miller (9) fights for control of the puck with Calgary Flames center Elias Lindholm (28) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Brock Boeser scored for Vancouver, and Thatcher Demko stopped 23 shots.

Vancouver Canucks center Bo Horvat (53) fights for control of the puck with Calgary Flames defenseman Noah Hanifin (55) during the second period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center Bo Horvat (53) fights for control of the puck with Calgary Flames defenseman Noah Hanifin (55) during the second period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

The Canucks pulled Demko for an extra attacker with more than two minutes on the clock, but couldn’t get the puck past their former goaltender.

The teams will meet again Saturday and Monday nights in Vancouver, then finish the series Wednesday night in Calgary.

Calgary Flames defenseman Nikita Nesterov (89) defends as Vancouver Canucks right wing Brock Boeser (6) shoots onFlames goaltender Jacob Markstrom (25) during the second period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Calgary Flames defenseman Nikita Nesterov (89) defends as Vancouver Canucks right wing Brock Boeser (6) shoots onFlames goaltender Jacob Markstrom (25) during the second period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Calgary Flames left wing Andrew Mangiapane (88) vies for control of the puck with Vancouver Canucks left wing Tanner Pearson (70) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Calgary Flames left wing Andrew Mangiapane (88) vies for control of the puck with Vancouver Canucks left wing Tanner Pearson (70) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks defenseman Alexander Edler (23) tries to stop Calgary Flames center Sam Bennett (93) from getting a shot on Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks defenseman Alexander Edler (23) tries to stop Calgary Flames center Sam Bennett (93) from getting a shot on Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks defenseman Jordie Benn (8) tries to stop Calgary Flames left wing Matthew Tkachuk (19) from getting a shot on Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks defenseman Jordie Benn (8) tries to stop Calgary Flames left wing Matthew Tkachuk (19) from getting a shot on Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Calgary Flames center Sam Bennett (93) tries to get a shot past Vancouver Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Calgary Flames center Sam Bennett (93) tries to get a shot past Vancouver Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center Adam Gaudette watches as Calgary Flames left wing Milan Lucic (17) tries to get a shot past Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center Adam Gaudette watches as Calgary Flames left wing Milan Lucic (17) tries to get a shot past Canucks goaltender Thatcher Demko (35) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center Adam Gaudette (96) and Calgary Flames center Mikael Backlund (11) watch the puck during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center Adam Gaudette (96) and Calgary Flames center Mikael Backlund (11) watch the puck during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center J.T. Miller (9) fights for control of the puck with Calgary Flames center Elias Lindholm (28) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)

Vancouver Canucks center J.T. Miller (9) fights for control of the puck with Calgary Flames center Elias Lindholm (28) during the first period of an NHL hockey game Thursday, Feb. 11, 2021, in Vancouver, British Columbia. (Jonathan HaywardThe Canadian Press via AP)