Hooker Nathaniel Roache has been ruled out for the Warriors clash against South Sydney on Friday.
The 21-year-old went down with a leg injury during the team's field session ahead of leaving for Sydney this afternoon.
The full extent of the injury is yet to be confirmed.
Roache was set to make his third appearance on Friday after returning from a hamstring injury he picked up against Manly in Perth on July 1.
For the second week running he was set to start at hooker with Issac Luke switched to the interchange bench.