Warriors hooker Nathaniel Roache will miss the entire 2018 NRL season, needing surgery on a lumbar disc injury.
The 21-year-old suffered the setback after returning from a ruptured Achilles tendon injury, which ended his 2017 season in August last year.
Roache has played 20 games for the Warriors, and was named the club's rookie of the year in 2016.
"It's really sad for Nate and we're all feeling for him," said Warriors head coach Stephen Kearney.
"He's a wonderful young man with a terrific attitude despite the adversity he has faced in his career.
"He made an excellent recovery from his Achilles surgery only for this to happen. We wish him all the best for his surgery and we're confident he'll come back better-than-ever."
Meanwhile, new signing Gerard Beale continues to make progress in his recovery from the broken leg which ended his Rugby League World Cup campaign in the Kiwis' opening match against Toa Samoa last October.
The experienced centre is expected to be available in late April.
The Warriors open their season against the South Sydney Rabbitohs on March 10 in Perth.
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