Tigers hooker Jacob Liddle was immediately taken from the field with a serious knee injury early into his side's 32-12 loss to the Manly-Warringah Sea Eagles on Thursday night.
Liddle fell awkwardly following a tackle on Sea Eagles captain Daly Cherry-Evans and was taken from the field by medical staff just six minutes into play.
The Tigers are yet to release a statement on the official diagnosis of the injury, as they await results from scans, but believe Liddle will be sidelined for the indefinite future.
Liddle started at hooker for the first time this season in the absence of Robbie Farah, who suffered a knee injury last week.
Wests will release an official statement on Liddle's condition once a diagnosis is issued.
