Warriors centre Konrad Hurrell is in doubt for Sunday's clash against the Manly Sea Eagles after suffering a head knock during Saturday night's 28-22 loss to the Brisbane Broncos.
Hurrell was yesterday named in coach Andrew McFadden's side to face the competition leaders but sat out team training and was due to undergo further concussion tests.
"He's going to get tested this afternoon and we'll just see how he goes," McFadden explained. "We kept him out of training today based on the recommendation of our doctor. He's going okay. We're optimistic that he'll be fine because he's not having a lot of symptoms."
Back-rower Feleti Mateo withdrew from the session with a calf concern, but McFadden said his departure was precautionary while the extent of the problem was yet to be determined.
"His calf just tightened up towards the end of the session. As we did last week with Sam [Tomkins], as soon as they tighten up we just take them off the field and get them assessed. We'll just have to wait and see what the medical staff comes back with."