And while it would have been a heart breaker if they had succeeded, the neutrals, if there were any in the ground might have applauded because these Scarlets, shy just three of their international contingent, came to play.
And they did. With verve and gusto and no small amount of skill putting width on the ball at every opportunity that demanded the utmost concentration from the Munster defence. In that aspect of play, particularly in the opening half, Doug Howlett played a captain's role.
In one short phase as Scarlets went left then right, he put in four tackles in the space of as many, maybe less minutes. Man of the Match Barry Murphy, playing his first full game for Munster since mid September 2009, wasn't far behind in the tackle count nor was Coughlan who was also the main instigator of Paul Warwick's 36th minute try.
Scarlets enjoyed the better of the early exchanges and were desperately unlucky to be reduced to 14 when in the 13th minute their scrum-half Martin Roberts was yellow carded for impeding Denis Hurley as he chased a high ball. Roberts did nothing illegal, just checked Hurley accidentally. Justice of a sort was done when Warwick's penalty from the Scarlets 10 metre line shaved the wrong side of the upright and minutes later Rhys Priestland, who had missed two earlier efforts, opened the scoring with a penalty.
Warwick landed two in the space of seven minutes before Priestland's 33rd minute effort leveled to leave the game delicately balanced. Then came the Coughlan inspired first try. The Dolphin man burst clear on half way, his surge taking him deep into Scarlet territory and when he was hauled down Mick Sherry was on hand to continue the move to short of the line. The support arrived in the shape of Peter O'Mahony, Niall Ronan and Billy Holland - he had another massive game - and the ball flashed right for Coughlan to surge again before delivering the scoring pass for Warwick to dot down under the posts.
It seemed Munster would take that seven point lead into the break but Scarlets had other ideas and an injury time try from captain Joanathan Edwards superbly converted by Priestland tied the score at the break.
Shortly after the restart Munster were down to 14 when O'Mahony saw yellow but while he was off cooling his heels Munster scored 14 points. The first try came when Howlett's sublime pass sent Tuitupou galloping through and almost immediately after the restart, Murphy, looking as sharp as a blade, took an excellent line to scorch over from 40 metres.
That score brought the biggest cheer of the night and Warwick's conversion put Munster into a 27-16 lead.
But it had never been the Scarlets intention to roll over and be tickled and a second Edwards try at the end of the third quarter, converted by Priestland, ensured that Munster had to keep their now weary shoulders firmly to the wheel. They laid siege to the Scarlets line, were denied and when the visitors lifted the siege, Priestland kicked a penalty to leave just one point separating the sides.
Munster came back for another bite of the cherry, were stopped short several times and when Scarlets lifted the siege this time it was with a move the length of the field halted by a last gasp tackle from Denis Hurley and then Scott Deasy and Tuitupou did their bit. Now it was Munster's turn to defend desperately and that they did with admirable control to snatch a deserved victory.
Munster: S Deasy (T Gleeson 78); D Howlett, B Murphy, S Tuitupou, D Hurley; P Warwick, D Williams (C Murray 22); W du Preez (D Ryan 70), M Sherry (S Henry 78), P Borlase (S Archer 78) ; B Holland, I Nagle; P O'Mahony (T O'Donnell 60), N Ronan, J Coughlan.
Scarlets: D Evans; M Stoddart, G Maule, R King, L Williams (N Reynolds 17); R Priestland (D Newton 79), M Roberts (T Knoyle 64); I Thomas, K Owens (E Phillips 64), P Edwards (P John 54); L Reed, D Day (D Welch 64); A Shingler (J Fa'amatuainu 54), J Edwards, B Morgan.
Referee: J Jones (Wales)
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