Ulster recorded a surprise victory over Irish rivals Munster to book their place in the Heineken Cup semi-finals.
Craig Gilroy scored the away side's only try, with Ruan Pienaar kicking over another 14 points at Thomond Park.
Brian McLaughlin's team will now host Edinburgh for a place in the final after the Scots earned an impressive 19-14 win over four-time winners Toulouse at Murrayfield on Saturday.
The other semi-final will feature Clermont following the French side's 22-3 triumph at Saracens.
Brock James notched up 17 points with the boot at Vicarage Road to secure a home tie against Leinster in the next round.
Leinster ran out 34-3 winners over Cardiff Blues on Saturday to reach the last four.