David Shillington and Joel Edwards will miss extended periods with injury, with both players set to miss the next 6-8 weeks.
Shillington will see a specialist today to see if surgery is required on a broken thumb, which he sustained playing for the Mounties in Wyong in round 2.
Joel Edwards has a toe injury which will see him in a protective boot for between 2-4 weeks, before he can return to training with the NRL squad.
Jeff Lynch is also waiting scans on a hand injury and will be reassessed once the results are in.
Jordan Rapana will also be assessed this week after missing round two with a hamstring injury.