Ulster secure a bonus-point 52-24 win over Harlequins to stay in contention for a place in the European Champions Cup quarter-finals.
Newcastle Falcons held on to complete the double over Dragons and take a big step towards the European Challenge Cup quarter-finals.
England centre Manu Tuilagi's comeback from his latest injury sees him start as Leicester host Munster in the European Champions Cup on Sunday.
Dylan Hartley out for Northampton while Ospreys recall Justin Tipuric for their European Champions Cup return at Liberty Stadium (15:15 GMT).
Audio & Video
Ex-England and Lions winger Ugo Monye and BBC rugby reporter Chris Jones discuss the effectiveness of video technology and television match officials.
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