Couturier, the Flyers' second-line center, won't play when they host the New Jersey Devils in a preseason game Wednesday. He is day-to-day with an upper-body injury.
"We're hoping he plays Friday (in the preseason finale at the Devils)," Hextall told the Flyers website.
Raffl sustained an upper-body injury in a preseason game against the New York Rangers on Monday, Hextall said. Raffl will not play Wednesday but might play Friday in the preseason finale.
"It's a day-by-day thing," Hextall said. "We'll see how it goes. Whether he plays Friday, I don't know."