His goal 40 seconds into the second period, 15 seconds after he helped kill a penalty, put the Flyers ahead 3-2. Then his saucer pass led to Scott Laughton's goal that made it 4-2 at 12:14.
"Credit to [Couturier], what he played through during the playoffs and the way he played," Laughton said. "I don't know what more to say about that guy. He's one of our leaders and he showed it and showed up every game and [I] can't say enough about that guy."
Couturier said that if this were the regular season, he likely would have been out four weeks.
"The decision was on me," Couturier said. "I had the support of the staff, the organization and medical team. They helped me a lot."
He skated Wednesday and Thursday on his own and played 16:55 in Game 5. He played 20:05 in Game 6, second among Philadelphia forwards to Claude Giroux (20:50).
Coach Dave Hakstol said he had to weigh how effective Couturier and Provorov could be with their injuries, and said he considered going with 11 forwards and seven defensemen to keep down Provorov's ice time. But that could have meant more of a burden on Couturier.