Konrad Hurrell breaks past Tyrone Roberts and Joseph Leilua.Knights v Warriors NRL rugby league match at Hunter Stadium, Newcastle Australia. Saturday 7 March 2015. Photo: Paul Seiser/Photosport.co.nz

A knee injury has centre Konrad Hurrell in doubt for the Vodafone Warriors’ round two NRL clash against the Raiders at GIO Stadium in Canberra on Sunday (6.30pm local time; 8.30pm NZT).

The 23-year-old left the field with a knee complaint 15 minutes into Saturday’s encounter with the Newcastle Knights but was able to return later.

The extent of the injury to his left knee is yet to be determined.

Wing Ken Maumalo is also in doubt after being ruled out of his NRL debut appearance with a hamstring injury cruelly picked up in the Vodafone Warriors’ final pre-game training run in Newcastle last Friday.

While fullback Sam Tomkins (hamstring) is regarded as doubtful it’s hoped he will be available for the trip to Canberra.

Hooker Siliva Havili is expected to be available this week after missing the NRL trials with a hamstring injury.

REHAB ROOM

Konrad Hurrell (knee) | TBC

Sam Tomkins (hamstring) | Round 2-3

Ken Maumalo (hamstring) | Indefinite

Sam Rapira (hamstring) | Indefinite

Glen Fisiiahi (shoulder) | Round 6

David Fusitu’a (shoulder) | Round 6

Siliva Havili (hamstring) | Round 2-3

Ngani Laumape (knee) | Indefinite

Charlie Gubb (foot) | Round 2-3