Munster are the only former Heineken Cup winners through to the prestigious tournament semi-finals at the end of the month - Saracens, Toulon and ASM Clermont Auvergne each out to get their names on the trophy for the first time.
Former double champions Munster will clash with ASM Clermont Auvergne at Stade de La Mosson in Montpellier in the first of the high profile last four contests on Saturday, 27 April.
A day later Saracens will be back at Twickenham Stadium for their Sunday showdown with Toulon - Jonny Wilkinson booting the Top 14 pacesetters through with six penalty goals and a trademark drop goal at the death for a 21-15 home win over Leicester Tigers.
In the earlier Sunday quarter-final Munster booked a record-equalling 10th semi-final with an 18-12 victory over Harlequins at The Twickenham Stoop - their fourth quarter-final win on the road - with Ronan O'Gara contributing all their points with six penalty goals.
The 2013 Heineken Cup semi-finals - (Both kick-offs local time)
Saturday, 27 April
18.00 ASM Clermont Auvergne v Munster Rugby - Stade de la Mosson (32,000)
Sunday, 28 April
15.00 Saracens v Toulon - Twickenham Stadium (82,000)
As part of the build-up to next month's Cardiff 2014 Heineken Cup and Amlin Challenge Cup finals weekend, ERC has joined forces with the WRU, Cardiff Blues and adidas to develop an annual grassroots community rugby programme targeting young players.
The Ulster Rugby full back, Jared Payne (No 15), has been suspended for two (2) weeks following an independent Disciplinary Hearing in Dublin arising from the Heineken Cup quarter-final match against Saracens at Ravenhill Stadium on Saturday, 5 April.