It's the most important hamstring in Canberra and the Raiders will be sweating on Josh Papali'i's scans to find out how long he'll be out for.
Papali'i had those scans on Monday afternoon after hurting it just 10 minutes into the Green Machine's 20-18 victory over the Sydney Roosters on Sunday.
The Raiders were expecting to know more on Tuesday, when they'll name their team to face the Gold Coast Titans at Canberra Stadium this Saturday.