The Scarlets ended a run of five defeats to claim their first win of the season in a tight 17-8 defeat of Connacht.
Ulster made it three wins from three to hit the Guinness PRO12 summit, but made hard work of their 19-8 win over the Scarlets.
A host of international stars return to club duty on Friday night while Isa Nacewa and WP Nel reach appearance milestones.
Edinburgh bounced back from a heavy opening-day loss to post a workmanlike 20-9 PRO12 win over the Scarlets.
Newport Gwent Dragons loosehead prop Luke Garrett has moved to Scarlets on a three-month loan deal.
A strong defensive display earned Munster a 23-13 Guinness PRO12 victory over the Scarlets at Parc y Scarlets.
Jonathan Davies is set to make his return for Scarlets as one of 11 internationals selected to face Munster on Saturday.
Ieuan Evans, Shane Horgan, Rory Lawson and Scott Quinnell preview the Guinness PRO12 season and look ahead to the Lions tour.
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Barbarians v South Africa
5th November 2016