Featherstone Rovers are counting the cost of their impressive 40-18 pre-season win over Leeds Rhinos two days ago with forward Ross Divorty, pictured, set to miss the Northern Rail Cup opener against Doncaster a week on Friday.
Rovers coach Daryl Powell said: "It looks like Ross has a bad injury to his knee. He will need a scan, but he could spend a fair while out.
"I am disappointed for Ross because he has worked hard in the off and pre-season to get himself in great shape."
Long-term casualty Iain Morrison, who has not played since undergoing a knee reconstruction last summer, could make his return this week.
Powell said: "Our reserves play Dewsbury on Sunday and I am hoping that Iain will play.
"That'll be great. Dom Dee is fitting in and he gives us options at
"We'll have to see with Ross, and then take it from there."
Two other players are feeling the effects of Sunday's game.
Powell said: "Stuart Dickens got a cut to his ear, which is going to need an operation and Andy Bostock got a bump on his eye."