Scarlets will face an anxious wait on prop Rob Evans after the Wales international is set to undergo a scan on his shoulder.
The 26-year-old suffered the injury during the recently concluded Pro14 encounter against Leinster in Llanelli where he left the field with discomfort just before the half-time.
Scarlets coach Wayne Pivac revealed that Evans already had a pain during the training session prior to the game and had to be replaced during the encounter because it resurfaced again.
"We are obviously concerned about the injury count again," said Pivac.
"Rob, we will need a scan to see what's going on there. We are not sure if it is a shoulder, but he felt it during the week and then again so he had to come off."
Apart from Evans, Scarlets also had further injury blows with Johnny McNicholl and Jake Ball taken off during last weekend's game against Leinster which they went on to win 23-21.
"Johnny went in and got a direct impact so we need to make sure there is nothing going on with his neck," Pivac said.
"That's what happens when wingers try to pick and go. He's had a bit of a laugh and joke about it and he's pretty sore, but hopefully it's not too serious.
"Jake was just starting to feel his Achilles area so the prudent thing was to get him off, he was walking around after the game with ice on it, so it was precautionary."
Scarlets are currently positioned fifth in the Conference B of the Pro14 table with a win and a defeat apiece in the two games until now.