Raiders player Jarrod Croker.

Injured ... Raiders player Jarrod Croker. Photo: Melissa Adams

The Canberra Raiders have suffered another massive injury blow, with Jarrod Croker ruled out for three to five weeks with a knee injury. 

The star centre suffered a small tear in his left medial ligament late in the Raiders 30-12 loss to North Queensland in Townsville on Saturday. 

It is the last thing the Raiders need ahead of a crucial date with defending premier Melbourne at AAMI Park this Saturday night. 

Still winless on the road this year, the Raiders injury toll is beginning to mount with gun forwards David Shillington and Josh Papalii already sidelined. 

Shillington (ribs) told The Canberra Times today he rates himself some chance of returning against the Storm, but is unlikely at this stage. 

Papalii is believed to be at least two weeks away after undergoing double knee surgery a fortnight ago. 

At 22, Croker became the second youngest Raider to reach the 100-game milestone in round five against the Warriors. 

Since his debut 2009, last year's NRL leading point scorer has missed just three games. 

Fullback Reece Robinson is likely to assume Croker's goalkicking duties after landing his only attempt at goal against the Cowboys.