New Zealand Warriors hooker PJ Marsh will be off the rugby league field and wearing a neck brace at least until the end of this week.
Marsh said he was given a bad scare when he heard several cracks as his head slammed into the turf at Parramatta when he was hit in a two-man tackle last Saturday.
X-rays and scans revealed no fracture and doctors thought it was ligament damage.
Marsh was still sore and uncomfortable yesterday, wearing the brace keeping his head up and straight.
Meanwhile, second-rower Ali Lauiti'iti's upper arm bone is healing well after removal of a benign cyst, but the rate of recovery has slowed.
He has his next date with an orthopaedic surgeon in four weeks to seek clearance to return to training.
Awen Guttenbeil, sidelined with a knee injury, is expected to be available next week. Clinton Toopi, with a wrist injury, wants to play now but cannot get a medical clearance.
Mark Robinson has one week left on his contract with the Warriors and was disappointed to be ruled out of contention this weekend when an old knee injured flared up.