Young props Jordan Baldwinson and Sam Hallas have both been called up by Leeds Rhinos head coach Brian McDermott for Saturday's trip to Catalans Dragons along with fellow front rower Mitch Achurch.
Leeds are without seven members of their 25-man senior squad through injury while Mitch Garbutt is banned for two games following his red card in last week's World Club Challenge loss.
Achurch has recovered from a rib problem suffered playing on dual-registration for Featherstone Rovers and is named in the 19, while former Featherstone prop Baldwinson is also included for the first time since returning to Rhinos in the off-season.
Catalans have included recently-signed former Australian Test hardman Willie Mason and former Huddersfield winger Jodie Broughton in their 19 man squad.
Mason, 35, has joined the Dragons on a deal to the end of the season while Broughton made the move to France in the close season but missed the opening two rounds of First Utility Super League due to injury.
Catalans will still be without their captain RĂ©mi Casty and Paul Aiton.
Catalans Dragons: Tony Gigot, Jodie Broughton, Krisnan Inu, Vincent Duport, Pat Richards, Todd Carney, Richie Myler, Louis Anderson, Glenn Stewart, Justin Horo, Jason Baitieri, Dave Taylor, Julian Bousquet, Eloi Pelissier, Greg Mounis, Thomas Bosc, Olivier Elima, Alrix Da Costa, Willie Mason.
Leeds Rhinos: Zak Hardaker, Kallum Watkins, Joel Moon, Ryan Hall, Rob Burrow, Keith Galloway, Adam Cuthbertson, Liam Sutcliffe, Brett Delaney, Brad Singleton, Jimmy Keinhorst, Mitch Achurch, Anthony Mullally, Josh Walters, Ash Handley, Jordan Baldwinson, Jordan Lilley, Brett Ferres, Sam Hallas.