Going into this crucial first game of the December back-to-backs, although Scarlets hold the whip hand with home advantage, all the pressure is on them to deliver on early promise.
That win in Franklin's Gardens puts them very much in the driving seat to emerge from the Pool stages for the first time since 2007 when they defeated Munster in the Stradey quarter – and there's a definite air of confidence about their camp in the run up to the Parc Y Scarlets encounter with Munster.
“Our young guys have no fear and want we want to give it our best shot.” says Rhys Priestland – not exactly an ancient mariner himself – in today's South Wales Herald. “You need that against Munster as you can get distracted by their pedigree.
“We will show Munster a lot of respect as they've earned it. But we need to back ourselves and go with the mentality to give it our best shot.”
And even if the young out-half is stating the obvious, nothing less will do. For either side.
As BJ Botha remarked earlier this week nothing that has gone before in meetings between the sides will count for anything this afternoon.
Last time they met in the Pool stages, Munster won home and away, the away game in Stradey played in filthy weather that produced that famous multi phase play that has only just been superseded by the other multi-phase end game against Northampton Saints in Thomond Park Stadium.
There's no question but that Scarlets have the strike runners to hurt Munster if they're given quality front foot ball. Nor is there any question about Munster's ability to deny them.
When Priestland talks about pedigree, an applies it to Munster, he's spot-on. They have Heineken Cup pedigree coursing through their veins and this afternoon there's no better side than Scarlets to test that quality.
On the day that Ronan O'Gara steps out to win his 100th Heineken Cup cap, he'll have a major influence. But it's likely to come down to who wins the forward battle and, although they lead the table, this is a game the Scarlets just cannot afford to lose.
Munster: D Hurley; J Murphy, W Chambers, L Mafi, S Zebo; R O'Gara, C Murray; W du Preez, D Varley, BJ Botha; D Ryan, P O'Connell capt; P O'Mahony, N Ronan, J Coughlan. Replacements: D Fogarty, M Horan, J Hayes, D O'Callaghan, D Leamy, T O'Leary, I Keatley, D Barnes.
Scarlets: L Williams; G North, S Williams, J Davies, S Lamont; R Priestland, G Davies; I Thomas, M Rees capt, R Thomas; S Timani, D Welch; A Shingler, R McCusker, B Morgan. Replacements: K Owens, P John, D Manu, K Murphy, J Edwards, T Knoyle, S Jones, V Iongi.
Referee: R Poite.