Castleford centre Ben Crooks is expected to be unavailable for the next month of Super League after injuring his kidneys against Huddersfield on Sunday.
Tigers coach Daryl Powell confirmed that Crooks could be out for four weeks.
“He got bruising on his kidneys during the Huddersfield game which caused bleeding in his urine and made life pretty difficult for him,” powell said.
“Again we will chase up on this, but at the moment its four weeks on the sidelines.”
“Frank [Mariano] has to go back to see a specialist. He has an injury to the same knee and scans are showing there’s not too much damage but he is still getting some pain in there.
“He’ll go back to see the specialist and we’ll get a diagnosis from there.”
Grant Millington and Jy Hitchcox will also miss this weekend’s round.
“We’re not sure exactly what happened but Jy looks to have dislocated three fingers during the Leeds game, causing a lot of bleeding and strain on the tendons in his hand,” Powell said.
“He’s had a lot of bruising which has made life really difficult for him. He’s then played on through the Catalans and Huddersfield games, I mentioned after the Huddersfield game that he’d needed around 25 injections to play.
“Jy has only had a couple of training sessions over the last few weeks, basically train then play, and it’s been really tough for him. We are trying to give him as much rest as we can, having two wingers available this week will hopefully really help us.
“He could have played but would have needed another plethora of injections to get through it.”
Luke Dorn is expected to be out for another six weeks while Ben Roberst is a week-by-week proposition.
Powell said Oliver Holmes will be fit to face Wigan and Junior Moors back for the Hull KR game.
“Holmes is progressing well and we are hopefully he’ll be back for the Wigan game,” he said.
“He’s another one who’ll we’ll check as we go through next week. He pulled up in a training session and we need to make sure he is right before he takes the field, but we are hopeful that in the near future he’ll be okay.”
“Junior’s surgeon has put another plaster on his hand for another couple of weeks, and we are going to chase after that a little bit to see if that can be taken off a little earlier.
“At the moment he is going to be back for the Hull KR game. It could be Wigan but at the moment it is Hull KR.”
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