OTTAWA -- Mikael Backlund had a goal and two assists for the Calgary Flames in a 6-3 win against the Ottawa Senators at Canadian Tire Centre on Saturday.
Matthew Tkachuk had a goal and an assist for the Flames (10-10-2), who lost 6-1 to the Senators on Thursday.
Brady Tkachuk scored for the Senators (7-15-1). It was the first time the Tkachuk brothers scored in the same NHL game; it was their sixth game against each other.
"He's turned himself into a really good player, obviously, in this league," Matthew Tkachuk said of Brady. "One of the best in the League, best on his team. He's a handful to play against."
Video: CGY@OTT: Tkachuk scores PPG in 3rd period
David Rittich made 31 saves for Calgary, which plays here again Monday.
Drake Batherson had a goal and an assist for Ottawa, which had its three-game winning streak end. Matt Murray allowed six goals on 33 shots and was replaced by Joey Daccord, who made five saves in his season debut.
"Our game is forechecking, physical, play off the cycle, and we did that in the third period, but we've got to come out ready when the game starts," Senators coach D.J. Smith said.
Juuso Valimaki one-timed a pass from Johnny Gaudreau to give the Flames a 1-0 lead at 4:00 of the first period. It was Valimaki's first NHL goal since Oct. 17, 2018; he missed last season with a knee injury.
"I'm not going to lie, that felt pretty good," Valimaki said.
Backlund's wrist shot on the rush went off the right post to make it 2-0 at 4:37. Lindholm's quick shot along the ice fooled Murray to make it 3-0 at 11:05.
"Right from the first 10 minutes, I thought we took charge of the game," Backlund said. "We played a solid game throughout the day."
Video: CGY@OTT: Backlund buries feed from Mangiapane
Batherson extended his goal streak to five games when he scored with a wrist shot from the top of the right face-off circle on the power play to make it 3-1 at 13:05. Thomas Chabot got his 100th NHL assist on the goal.
"I think we're just jelling as a team, overall," Batherson said. "I've been getting some looks, creating some chemistry with [Tim Stutzle] and whoever's been playing center with us. Hopefully we can keep building off that. I've been getting shots all season, but they seem to be going in now, so I'll keep shooting."
Video: CGY@OTT: Monahan fires a quick snap-shot for PPG
Sean Monahan scored for Calgary with a snap shot into the top left corner on the power play to make it 4-1 at 4:02 of the second period. Andrew Mangiapane tapped in a loose puck in the crease on a shorthanded break to give the Flames a 5-1 lead at 9:36.
"We're building, we're trending in the right direction," Mangiapane said. "Next game we're going to have to keep building on it. It's not going to all just change in one game or anything like that, it's a build. Every time you get out there, you're building. You're building on your last shift, you're building on your last game."
Colin White scored for the Senators with a wrist shot from the slot on the power play to cut it to 5-2 at 10:16.
Matthew Tkachuk tipped a shot from Backlund to make it 6-2 at 16:19. Brady Tkachuk jammed a shot in from the side of the net on the power play to cut it to 6-3 at 10:00 of the third. The Senators power play was went 3-for-6.
"It's been good the last little bit here. We've been dangerous every time it's been out," Smith said. "We weren't dangerous enough 5-on-5 tonight, but our power play could score every time it was out there."
NOTE: Batherson is the second Senators player age 22 or younger to have a five-game goal streak. Jason Spezza scored six goals in five straight games Nov. 19-29, 2005.
Video: Backland and Tkachuk score in Flames victory