Ersson is set to start on the road in Montreal for Saturday's preseason game, per the NHL media site.
Ersson had a 14-11-5 record, 3.12 GAA and .870 save percentage in 33 regular-season appearances with the Flyers in 2025-26. He's slated to start the upcoming campaign as Ottawa's No. 2 goaltender behind Linus Ullmark.