Reds scrum-half Nick Frisby will miss his team's final match of the 2014 Super Rugby season against the Waratahs after he suffered a broken jaw in his team's loss to the Western Force.
Frisby will be out for six weeks after copping a knock to the jaw early in the second half during Saturday's game in Perth.
Initial hopes were that he would be able to take the field this weekend, but scans late Monday revealed the fracture, which will require surgery.
"It is disappointing to lose Pickle (Nick Frisby)," said Reds head coach Richard Graham.
"He has played some good Rugby for us recently and it would have been beneficial to continue his partnership with Benny Lucas this weekend.
"Following surgery tonight he'll be out for at approximately six weeks."
Frisby's injury adds to a long list of squad members currently unavailable for selection, along with Quade Cooper (shoulder/hip), Blake Enever (bicep), Anthony Fainga'a (calf), Chris Feauai-Sautia (shoulder), Will Genia (ankle), Liam Gill (Australian Sevens duties), Eddie Quirk (knee), Dom Shipperley (ankle) and Aidan Toua (pectoral).