Bath centre Matt Banahan will have a scan on his knee after he was forced off during Saturday's 30-23 win over Wasps at the Rec.
The England international left the stadium in a knee brace after Bath had recorded their second consecutive victory of the new season.
"Matt has damaged his knee and we will know more about it in the next 48 hours," said Bath skills coach Brad Davis.
"He will go to have a scan and we will wait and see what the results are, but he has been put in a brace."
Next up for Bath in the Aviva Premiership is the visit of Northampton Saints on Friday.