Chris Tierney scored the tiebreaking goal late in the third period and Filip Gustavsson stopped 35 shots in his first NHL start, leading the Ottawa Senators to a 2-1 win over the Calgary Flames on Monday night.

Tierney scored his fourth of the season, and first in 30 games, at 17:24 of the third. That was enough for Gustavsson, who helped Ottawa to its first win in three games and fourth in six games this season against Calgary. Ryan Dzingel also scored for Ottawa.

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Ottawa Senators' Tim Stutzle (18) gets upended by Calgary Flames' Rasmus Andersson during the third period of an NHL hockey game in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Chris Tierney scored the tiebreaking goal late in the third period and Filip Gustavsson stopped 35 shots in his first NHL start, leading the Ottawa Senators to a 2-1 win over the Calgary Flames on Monday night.

Ottawa Senators Filip Gustavsson (32) celebrates the team's win over the Calgary Flames in an NHL hockey game in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

The 22-year-old Gustavsson became the fourth goaltender to start a game this season for Ottawa. He stopped eight shots in place of injured starter Joey Daccord in the Senators’ 3-2 shootout loss to Vancouver on Wednesday night, his NHL debut.

Ottawa Senators' Chris Tierney (71) celebrates his goal with teammates as Calgary Flames' Johnny Gaudreau skates past during the third period of an NHL hockey game in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Gaudreau tied the game at 14:54 of the third. He came off the bench to take a centering pass from Milan Lucic and fired a shot past Gustavsson for his 13th of the season.

Calgary Flames' Mark Giordano (5) wipes his face during a pause in play during the third period of the team's NHL hockey game against the Ottawa Senators in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

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Calgary Flames captain Mark Giordano skates up the ice during the third period of an NHL hockey game against the Ottawa Senators in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Calgary Flames captain Mark Giordano skates up the ice during the third period of an NHL hockey game against the Ottawa Senators in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Johnny Gaudreau scored for Calgary, which fell to 4-3-0 under head coach Darryl Sutter. The Flames were playing their third game in four nights and coming off a 2-0 loss to Toronto on Saturday.

Ottawa Senators' Tim Stutzle (18) gets upended by Calgary Flames' Rasmus Andersson during the third period of an NHL hockey game in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Ottawa Senators' Tim Stutzle (18) gets upended by Calgary Flames' Rasmus Andersson during the third period of an NHL hockey game in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

The 22-year-old Gustavsson became the fourth goaltender to start a game this season for Ottawa. He stopped eight shots in place of injured starter Joey Daccord in the Senators’ 3-2 shootout loss to Vancouver on Wednesday night, his NHL debut.

Dzingel had the only goal of the first at 10:23. He converted on a 2-on-1 with Clark Bishop, beating Jacob Markstrom (21 saves) on a wrist shot for his seventh of the season.

And Gustavsson made it stand through two periods despite Calgary holding a 26-16 edge in shots on goal. He made a nice stop on Calgary’s Zach Rinaldo just over nine minutes into the second, then denied Flames forward Dillon Dube with 2:34 to play.

Ottawa Senators Filip Gustavsson (32) celebrates the team's win over the Calgary Flames in an NHL hockey game in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Ottawa Senators Filip Gustavsson (32) celebrates the team's win over the Calgary Flames in an NHL hockey game in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Gaudreau tied the game at 14:54 of the third. He came off the bench to take a centering pass from Milan Lucic and fired a shot past Gustavsson for his 13th of the season.

UP NEXT

The teams complete their two-game set on Wednesday.

Ottawa Senators' Chris Tierney (71) celebrates his goal with teammates as Calgary Flames' Johnny Gaudreau skates past during the third period of an NHL hockey game in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Ottawa Senators' Chris Tierney (71) celebrates his goal with teammates as Calgary Flames' Johnny Gaudreau skates past during the third period of an NHL hockey game in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

More AP NHL: https://apnews.com/hub/NHL and https://twitter.com/AP_Sports

Calgary Flames' Mark Giordano (5) wipes his face during a pause in play during the third period of the team's NHL hockey game against the Ottawa Senators in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Calgary Flames' Mark Giordano (5) wipes his face during a pause in play during the third period of the team's NHL hockey game against the Ottawa Senators in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Calgary Flames captain Mark Giordano skates up the ice during the third period of an NHL hockey game against the Ottawa Senators in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)

Calgary Flames captain Mark Giordano skates up the ice during the third period of an NHL hockey game against the Ottawa Senators in Ottawa, Ontario, Monday, March 22, 2021. (Sean KilpatrickThe Canadian Press via AP)