Canterbury will be without big number eight Nasi Manu for Saturday's ITM Cup semi-final clash with Taranaki in Christchurch.
The defending champions are also sweating on the availability of star flank Matt Todd, who is likely join Manu on the sideline after both players suffered knee injuries.
Todd has played in all of Canterbury's 10 matches leading into the semi-finals while Manu has missed just one.
"Nasi Manu is no good for this weekend and Matt Todd is really doubtful," Canterbury head coach Tabai Matson told Sportal.
"They're a big loss but as has happened all year the guys who have come onto or off the bench have done a really good job so we're really confident they'll know what to do."
Canterbury, who have won four ITM Cup titles on the trot and bidding for a fifth consecutive final, have been boosted with news that full-back Johnny McNicholl should be fit to play.
The competition's leading try-scorer suffered a wrist injury in last Sunday's 63-22 win against Bay of Plenty.
"He has pulled through really well over the last 48 hours so we're hopeful that he will be available and be selected on Thursday," said Matson.