The Scarlets welcomed the Blues U15's to Carmarthen Park with both sides realising the significance of the game.
Both sides had won their first games easily so this game was likely to be key at the end of the regional season.
The Scarlets started the strongest but some poor passing allowed the Blues into the game and they ended the first half the strongest with only committed try line defence led by Jodie Williams, Ffion Jones and Emily Coleman keeping out a strong Blues attack.
The second half started like the first with the Scarlets in control but after the break the Scarlets seemed to have a new resolve, and when the ball was moved quickly wide to Sioned Jones, she beat two defenders on the outside to score near the corner flag.
With the conversion attempt wide of the mark, the result was still in the balance and despite the Scarlets dominating possession the Blues backline looked dangerous every time they had the ball, but determined defence from the Scarlets stopped every attack from the Blues.
The last 10 minutes of the game was a battle of wills, but the Scarlets were determined after last season's 0-0 score line not to let their lead slip.
With Chloe Davies and Elisha Butchers winning the breakdown battle and no gaps in the Scarlets backline defence, the Blues had nothing left to offer, and the Scarlets held on for a deserved victory.
With only one try conceded in 10 regional games, the Scarlets defence proved to be rock solid.
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