Wigan Warriors will be without Sam Powell in Saturday's World Club Challenge clash against Sydney Roosters.
The 21-year-old, who can operate either as a half-back or a hooker, picked up an ankle injury in training.
Wigan coach Shaun Wane told reporters: "It is a big blow for Sam, who has worked really hard in pre-season, but, with his character, I'm sure he will bounce back stronger."
Three-time champions Wigan have not won the World Club Challenge since 1994.
