Birr's Michael Milne continued his rich vein of form for Leinster.
Leinster, Connacht, and Munster make up three quarters of this year's URC Semi-Final line up after all three emerged from their quarter finals over the weekend.
Last year's beaten finalists Leinster made home advantage count on Saturday with a comprehensive win over The Sharks at the Aviva Stadium.
Birr's Michael Milne crossed over for his sixth try in five games as Leo Cullen's side finished 35-5 winners.
Munster benefitted from a Glasgow first half red card to win in Scotstoun 14-5.
And Jack Carty led Connacht to a nail biting 15-10 win on Friday night against Ulster at the Kingspan stadium.
Munster face Leinster at the Aviva Stadium with Connacht taking on a Stormers side who overcame the Bulls 33-21.
Cape Town will play host to the Western province at 3pm on Saturday, with the second semi-final in Dublin kicking off at 5.30pm.
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