The Warriors have revealed hooker Issac Luke has a knee injury which will keep him out of action for a month.
The Warriors had named Luke, 29, to start against the Gold Coast Titans on Sunday.
But on Friday they revealed he picked up the knee injury late in the 20-16 golden point win over Penrith.
It is hoped following arthroscopic surgery early next week he would be back for the club's final regular season match against the Parramatta Eels at Mt Smart early in September.
Nathaniel Roache is likely to replace him for the Titans match while Jazz Tevaga has been brought into the squad to provide cover.