Mason stopped 33 shots for his franchise-record 10th shutout of the season, Jason Williams had two power-play goals, Rick Nash had a career-high four assists, and former Flames forward Kristian Huselius also had four assists in the Blue Jackets' penalty-filled 5-0 win over Calgary on Thursday.
"We have a pretty good idea that if we're in the playoffs this is a team we could be playing, so we wanted to have a good effort. We definitely came forward with it, that's for sure," Mason said.
Mason, who broke the team record set last season by Pascal Leclaire, leads the NHL in shutouts and has the most for a rookie since Tony Esposito had 15 for the Chicago Blackhawks in 1969-70.
Calgary, the third-place team in the Western Conference, has dropped two straight. The sixth-place Blue Jackets are 7-1-1 in their past nine as they try to qualify for their first playoff appearance.
"It shows what we have to do to beat a team like that," Nash said. "They're obviously a great team. We know they didn't play their best, but I thought we had a great game and we played our best."
The Flames were coming off a 2-0 loss at Pittsburgh on Wednesday.
"We showed some elements of frustration and lack of discipline in certain areas, particularly when it wasn't going our way," Calgary coach Mike Keenan said.
The teams combined for 124 minutes -- 64 by Columbus -- with 110 coming in the second period when there were two fights, two game misconducts and four misconducts.
After failing to score through two periods of their previous two games, the Blue Jackets took an early lead when Nash set up Malhotra at 3:43 by breaking down the right side and cutting sharply in the middle of the right circle.
That drew the attention of goalie Miikka Kiprusoff, and Nash feathered a backdoor pass to Malhotra for the easy redirect into the open net.
"We raised our competitive level and got rewarded for it," Columbus coach Ken Hitchcock said.
Columbus scored a power-play goal at 12:29 with Williams taking a centering pass in the high slot from Huselius and using Malhotra's screen in front. Williams' shot went through the pads and trickled across the line before Kiprusoff could reach back and grab it.
"They were good," Calgary captain Jarome Iginla said. "Huselius had a great game and so did Nash. Their line was controlling things all night, creating momentum for them. They were good and our game isn't where it needs to be right now."
- Calgary RW Todd Bertuzzi returned after missing 10 games with a knee injury. He fought Columbus D Rostislav Klesla in the second period.
- Blue Jackets LW Fredrik Modin (knee) has missed nine straight games and 17 of 18.
- The teams split four games this season with the home team winning every one.