Both the Scarlets and the Blues will have home advantage when they attack the 15th Heineken Cup competiton in October.
The Blues will play their first European match at their Cardiff City Stadium against Harlequins, while the Scarlets will begin their campaign by welcoming Brive to west Wales.
Leinster will launch the defence of their Heineken Cup title against London Irish on the evening of Friday 9, October 2009 at the RDS in Dublin in what will be their first meeting in Europe's premier club rugby tournament
The fixtures, dates, kick-off times and host broadcasters for the first four Rounds of the 15th edition of the Heineken Cup were today (Thursday, 23 July) announced by ERC, the tournament organisers.
Leo Cullen's champions then travel to France to clash with 1997 winners Brive in another tournament first meeting before their quick-fire back-to-back contests with more familiar opponents the Scarlets.
Former double champions Leicester Tigers, beaten 19-16 in the 2009 final at Murrayfield two months ago, open their challenge in the Heineken Cup 2009/10 at the revamped 24,000-capacity Welford Road against the Ospreys in a carbon copy start to last season's campaign.
While the English champions have the bonus of a home start, French champions Perpignan begin on the road against top Italian club Benetton Treviso with Heineken Cup 2009 semi-finalists Cardiff Blues home to Harlequins and Munster travelling to Northampton Saints in yet another clash of former tournament winners.
Whenever Bedlinog tackle Penallta a massive fixure is guaranteed but this Sunday there will be even more emphasis placed on the two rivals when they contest the SSE Swalec Plate final at Principality Stadium.
Ahead of their SSE SWALEC Bowl Final clash with Taffs Well at Principality Stadium on Sunday, Burry Port share their #FABXV nomination with WRUTV in the search for Welsh rugby's greatest volunteers. Everyone can get involved by sending nominations via twitter to @WRU_Community using the hashtag #FABXV
Cardiff Blues prop Gethin Jenkins and Ospreys centre Ben John look ahead to the first game at Principality Stadium in Saturday's double header which is promising to be a special occasion for all Welsh fans.
Carmarthen Quins Director of Rugby Ian Jones and committee member Jeff Thomas along with Llandovery chairman Handel Davies look ahead to Sunday's SSE SWALEC Cup showdown where both teams are out to prove 'West is best'
SWALEC ambassador Shane WIlliams is looking forward to Sunday's Finals Day where the Cup, Bowl and Plate offers a great opportunity for players and teams to experience the magic of playing at Principality Stadium
Carmarthen Quins coach Richard Kelly believes it is an exciting time to be part of the Scarlets region as his side take on local rivals Llandovery in the SSE Swalec Cup final on Sunday, as WRU TV's Graeme Gillespie discovers