Furner delivered a simple message to his players yesterday after scans confirmed Shaun Fensom and Josh Dugan would be sidelined for an extended period - it's time for everyone to ''step up''.

Fensom has a small tear in his bicep and Dugan is nursing an AC joint problem. Both will be out of action until May.

Trevor Thurling's knee injury isn't as bad as first thought and if his scan results this morning are clear he could be available for selection this week.

While the injuries are a massive blow to the Raiders, Dugan's NSW State of Origin hopes are still alive with the electrifying 21-year-old expected to return by round nine.

That would give him two games to impress Blues coach Ricky Stuart before the opening Origin match on May 23.

The immediate concern is for the Raiders' campaign. Furner needs to find a player capable of handling Fensom's defensive workload and a fullback with the ability to strike from anywhere.

Furner will name his team today for the match against the Wests Tigers at Campbelltown on Monday night with Joe Picker and Jarrad Kennedy the likely candidates to fill in for Fensom at lock. Blake Ferguson is expected to take the No.1 jersey.

Sam Mataora could also play his first game of the season if Thurling is ruled out. Nathan Massey has recovered from an Achilles injury, but the Raiders coaches want him to get more game time in the NSW Cup before making a return to first grade.

It means the door has been opened for Dimitri Pelo to make his NRL debut against the Tigers. Reece Robinson could also come into contention if he shows he has recovered from a fractured cheekbone.

''There are a number of options there, we've just got to pick the right ones,'' Furner said.

''We placed a lot of emphasis on mental toughness this year … these players will bounce back.

''We've just got to step up. I'm confident whether it's a Fergo or Reece to play that role at fullback quite well.

''You know they're going to go out and play 100 per cent, it's the players around them that have to make sure they're at that level as well.''

While the Raiders deal with injuries, Tigers captain Robbie Farah faces a fight with the NRL judiciary to play Canberra.

Farah has been charged with a grade-two dangerous throw.

Fensom, Dugan and Thurling join Dane Tilse and Robinson on the casualty list just three rounds into the season.

The Raiders struggled with injuries last season with Terry Campese out of action for all but nine minutes, Dugan fighting niggling problems and David Shillington and Tom Learoyd-Lahrs on the sideline for extended periods.

But Fensom is confident the team will not head down the same path which saw it finish 15th last year.

''Injuries took a big toll on us but I thought the boys still played well for only having 14 fit men versus a full fit Roosters side,'' Fensom said.

''It's disappointing not to have the two points. We can't use the injury toll as an excuse, we still should have won that game with the amount of opportunities we had.

''We've got a lot of depth there and some younger guys who can come through and do the job.''