Scarlets themselves lost try-scorer Williams, with Andy Fenby coming into the wing position.
BBC: Scarlets 32-37 Glasgow Warriors
2.
The ball was moved quickly across the back line, giving wing Fenby an easy run to the corner for a try that was improved by Priestland.
BBC: Scarlets 25-8 Ulster
3.
Connacht seemed to start dictating play towards half-time but suffered a blow when their skipper Frank Murphy got himself sin-binned for a high tackle on Scarlets full-back Andy Fenby.