**Leinster and Ulster meet in a Saturday night blockbuster at the RDS Arena to round off the weekend's fixtures.** The two Irish provinces have been the pace-setters in the United Rugby Championship, with Leinster having won all five of their matches and Ulster losing their perfect record when they were beaten by Connacht at the Aviva Stadium last time out. Leinster will be without captain Johnny Sexton after he was ruled out for around six weeks with a twisted ankle and knee sustained in Ireland's win over New Zealand. Jack Conan and James Ryan are also not available after picking up injuries on international duty, while Jamison Gibson-Park is another to miss out, but Tadhg Furlong - who signed a new contract this week - starts in the front row. Ulster welcome back scrum-half John Cooney but will be without Iain Henderson, who suffered a hamstring injury during the warm-up for Ireland’s Autumn Nations Series game against Argentina last Sunday.