Connacht run in five tries in an efficient performance which sees them canter to a 38-14 Pro14 win over Dragons.
Scarlets get new head coach Brad Mooar's reign off to a winning start with an 18-10 Pro14 victory over Connacht.
Ulster will begin their European campaign away to the English side on 16 November with Clermont Avergne their opening opponents in Belfast.
Ulster host Ospreys at Kingspan Stadium on the opening night of the 2019/20 Pro14 season on Friday, 27 September.
Audio & Video
Former Ulster scrum-half Paul Marshall says the 21-12 derby loss to Connacht was just a "poor night" for the visitors in Galway.
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