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Castleford are reeling from the loss of captain Michael Shenton for the rest of the season with an anterior cruciate ligament injury sustained in his side's opening match.
The former England centre was helped from the field in the first half of the Tigers' 16-16 draw with Hull KR at the KC Lightstream Stadium on Sunday and s cans on Monday confirmed his worst fears.
"Some of you will have already heard that my season has ended before it began with a knee injury sustained yesterday which is extremely frustrating for me," Shenton said.
Shenton, who will undergo surgery in the coming weeks, added: "I've had a great pre-season and felt fresh coming into the season so to have it cut short from a reckless challenge is difficult for me to swallow but I'll be doing all I can off the field to support the boys through this season."
Hull KR hooker John Boudebza has been charged by the Rugby Football League's match-review panel with a grade B offence of making dangerous contact with Shenton and will appear before a disciplinary panel on Tuesday, faced with a potential ban of up to two matches.
Castleford coach Daryl Powell condemned the tackle in the post-match press conference and is disappointed with the grading of the offence.
"It's really disappointing the type of tackles that can do that to people are still in the game," Powell said. "There's a job needs to be done in terms of dealing with that, but that is no consolation to Shenny or to us.
"It's a massive blow for us and we now need to see a response from a few other players within our team. Our leadership is going to need to develop across a few players. These things happen, but it is pretty tough to take."