Wests Tigers fullback Moses Mbye.

The Wests Tigers have been dealt a huge blow leading into the club’s biggest game in almost a decade, with skipper Moses Mbye ruled out for Sunday’s blockbuster against Cronulla.

NRL.com understands Mbye has been scratched for the do-or-die fixture against the Sharks, struggling to get through the week of training as he aims to return from a hip injury.

The Tigers are yet to officially rule Mbye out of the game.

The Queensland State of Origin representative has been racing the clock to play, however failed to prove himself at a closed session at Leichhardt Oval on Thursday.

Retiring hooker Robbie Farah is remarkably on track to return from a broken leg he suffered at ANZ Stadium just 26 days ago.

Farah has pulled up well after every session he’s been asked to fulfil this week, with his chances of playing in the match increasing with every day.

Tigers coach Michael Maguire met with Farah on Thursday and will front the media on Friday morning to provide an update on the hooker’s chances of playing.

NRL.com understands Farah is poised to defy the odds and take part in the match, as long as he can get through captain’s run on Saturday.

The Sharks have their own injury concerns, with Shaun Johnson and Matt Moylan likely to take the field underdone in a desperate bid to keep their season alive.