Results from the weekend mean that three out of the four semi-finalists for the Heineken Cup play their domestic rugby in the Magners League, the first time the League has had such representation at this stage of the northern hemisphere's most prestigious competition.
It is also the first time teams from the Celtic Unions have taken up the majority of the semi-final berths since the inaugural season of the Heineken Cup when neither England nor Scotland entered sides.
For current European champions, Munster, it will be their eighth semi-final appearance in ten years, whilst their opponents in the mouth watering all-Ireland tie, Leinster, make it to this stage for the fourth time, although they have never lifted the trophy.
Cardiff Blues, who next week face Gloucester in the Anglo-Welsh EDF Energy Cup at Twickenham, reached the semi finals for the first time since the region was formed with a 9-6 victory over French aces Touluse, however their forerunners, Cardiff, played in the very first Heineken Cup final at the Arms Park.
Director of Celtic Rugby, David Jordan said "Congratulations must go to all the teams for their performance over the weekend, a clear reflection of the success that Magners League teams, and their players now enjoy when they transcend into other tournaments.
"With the RBS Six Nations Trophy once more safely secured in Celtic hands, there is now all to play for to ensure that the Heineken and EDF Energy Cups will both be retained by Magners League teams. Good luck to all those taking part."
When the Wales squad were asked to nominate individuals who played a big part in their early playing days, Wales and Dragons full back and wing Hallam Amos thought of his former Monmouth School rugby coach John Bevan.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series