Vegas Golden Knights forward Max Pacioretty could be out of action for up to six weeks, according to Sportsnet's Elliotte Friedman.
Pacioretty sustained a lower-body injury during Thursday's 6-2 loss to the Los Angles Kings.
The 32-year-old scored twice and added an assist to lift Vegas to a 4-3 victory over the Seattle Kraken in their season opener Tuesday.
Meanwhile, there's still no update on captain Mark Stone, who left Thursday's tilt during the second period.