Jayden Struble also scored for the Canadiens, and Sam Montembeault (seven) and Jakub Dobes (11) combined to make 18 saves.
William Eklund scored, and Dylan Cozens had a goal and an assist for the Senators. Samuel Ersson made 33 saves, including 11 in the third that gave them a chance in overtime.
Eklund and Ersson made their debuts for Ottawa after each was acquired in a trade with the San Jose Sharks (June 23) and Maple Leafs (June 26), respectively.
"There's things to build on," Ersson said. "I mean, it's preseason. It's a lot about us getting a good feel for the game, get some game time, reads and all that takes a little time for that to come back, so I think it's definitely some good things that I take with me and try to build on here."
Before the puck dropped, though, five members of the local organizing committee lined up behind one another in the tunnel leading past the penalty boxes to center ice. They were dressed in blue hockey jerseys with white trim and the No. 19 for the recognized year that Kraft and the NHL have teamed to donate to the winning community for arena renovations. One by one they patted each other on the shoulders like they were about to play a Stanley Cup Playoff game.
Minutes before, the group of five stood with a group of 40 kids aged 5-12 from Ecole primaire Sainte-Marie singing "O Canada." Amanda McKay and Lara Hukezalie, who is from Elliot Lake, the 2024 winner of Kraft Hockeyville, then completed the ceremonial passing of the trophy to Jean-Sebastien Descoteaux, Natacha Pioltte, Alexandre Gadoury, Junior Tifo and David Michel.