Flyers coach Alain Vigneault declined to comment on whether Sean Couturier will play after he missed the third period and overtime of Game 5. Couturier was injured when he collided with Barzal with 2:34 remaining in the second.
Philadelphia's top two-way center, Couturier has scored nine points (two goals, seven assists) in 14 postseason games. Scott Laughton replaced Couturier on his line with Giroux and Jakub Voracek after the injury and scored the game-winner at 12:20 of overtime.
"Nobody can replace [Couturier]," Vigneault said. "[Couturier] is obviously one of the best two-way centers in the League, plays a 200-foot game and he's very dependable and trustworthy. ... We'll see what unfolds here tonight, but there's no doubt that whoever's in the lineup, guys have to play well because we're definitely going to have to be at our best tonight."