With Kari Lehtonen still recovering from offseason back surgery, the goalie position remains a big question for Atlanta (2-3-1).
The 22-year-old Pavelec had 21 stops but struggled in his third start of the preseason. Pavelec is competing with veterans Johan Hedberg and Manny Legace for the starting job, at least until Lehtonen is healthy.
Chris Thornburn scored Atlanta's only goal.
The teams will open the season in Atlanta on Saturday.