Wales' Warren Gatland was given fresh injury concerns ahead of their November internationals as Liam Williams and Jake Ball went off injured during Scarlets' Champions Cup defeat to Saracens.
Full-back Liam Williams rolled his ankle in the 14th minute and in the second half lock Jake Ball followed him into the treatment room, grimacing as he clutched his damaged ribs.
Williams has been earmarked for the number 15 jersey against Australia on November 5, while the in-form Ball has been pushing hard for a place in the starting fifteen.
"Hopefully Liam will be all right. He feels good in himself. He's in a moon boot to give him the best opportunity to recover and get into that Wales camp next week," Scarlets head coach Wayne Pivac said.
"Jake is a bit sore at the moment. He has a rib injury and we'll get that checked out. Hopefully the injuries won't be too serious and we'll know more over the next couple of days."
Wales centre Scott Williams withdrew from the Scarlets team in the build up to the match. "Scott has an ankle injury as well. There's a bit of swelling there and he just didn't quite recover in time. Another couple of days and he would have made it. He'll be fine to go into camp next week," added Pivac.