Cornish Pirates' back-row Dan Lee could be out for a lengthy spell after suffering a knee injury.
The 22-year-old, who is an ex-England Under 19's player, made his debut in December having joined in 2014.
"He suffered a serious knee injury in training," Pirates director of rugby Ian Davies told BBC Radio Cornwall.
"I'm devastated for the lad because he was going to be playing a major part moving forward until the end of the season for us."
He added: "Hopefully when he gets his scans this week they're not as bad as they could be."