Couturier sustained a lower-body injury in the first period of Game 3 on Thursday, but did not look restricted in the morning skate Sunday, took line rushes in pre-game warm-ups in his usual spot, between forwards Maxime Talbot and Eric Wellwood.
Couturier, the eighth pick of the 2011 Entry Draft, has three goals and an assist in nine playoff games, but has developed into the team's best defensive center.
"Sean is an important piece of the team," Flyers coach Peter Laviolette said following the team's skate Sunday morning. "He looked good skating out there. He's smiling, that's always good."
Here's how the lineup will look when the puck drops about 7:30 p.m. ET:
It's cool when you think about how many great American players have played the game and the two players that were at that 18-game point streak and what they've done in their careers. It's pretty cool right now, but it was kind of overshadowed by the loss.
— Blackhawks forward Patrick Kane after breaking the record for longest point streak by an American-born player with a goal and an assist in a 3-2 overtime loss against the Kings