WAYNE Pivac has admitted that Leicester will present something of an unknown challenge when they pitch up in Llanelli tomorrow.
But for many Scarlets fans, they will be more than familiar with the scars the Tigers are capable of inflicting.
The vision of Tim Stimpson's late penalty bouncing off the crossbar then ricocheting in off the upright will probably still induce cold sweats among those who ventured to Nottingham 12 years ago.
Then, five years later at Leicester's Walkers Stadium, a Scarlets side that stunned Toulouse and Munster on their way to the semi-final, found the men in red, white and green, another insurmountable obstacle.
In all, out of seven meetings between the sides in European competition, the Scarlets have only emerged with the spoils once — on a memorable Saturday afternoon at Stradey Park in January, 2002.
That day, spearheaded by the inspirational Scott Quinnell, Gareth Jenkins's side hounded down the defending champions, who boasted a pack that had been at the heart of England's rise to World Cup glory.
Martyn Madden and John Davies delivered colossal performances, backed up by the likes of Chris Wyatt, David Hodges and Simon Easterby.
With Stephen Jones kicking eight penalties, the Scarlets produced one of their great European performances.
And although the Tigers these days may not be the same English powerhouse as they were under Martin Johnson, the West Walians are going to need a similar display of doggedness and passion if they are to claim a victory that will keep alive their Rugby Champions Cup hopes this season.
So what of Leicester this term?
Ravaged by injury, they suffered the ignominy of a 45-0 Premiership drubbing at the hands of Bath last month, then suffered a rare Welford Road reverse against London Irish.
But there are few who dare write off Richard Cockerill's side, a wise move considering the way they laid the platform for victory with an outstanding first-half display against Ulster last weekend.
"They are a little bit of the unknown, which is probably a threat in itself," said Pivac ahead of tomorrow's clash in Llanelli.
"Because of the injuries they have had, they haven't really had a stable side over recent weeks.
"I know with Tuilagi back over the last couple of weeks that has improved them, but he is not going to be there this weekend so we go back and look at them prior to that.
"It is a bit of a juggling act in terms of our previewing, but we have got to just go out there and the focus has got to be replicating the performance and energy levels of last weekend in Toulon.
"If we can do that then we will give ourselves a very good chance."
Certainly, the Scarlets will feel if they take the field with the same appetite as they did on the French Riviera then they have every chance of opening their Pool 3 account.
Shorn of Dan Cole, Tom Youngs, Ed Slater, Geoff Parling, Tom Croft and Samoan prop Logovi'i Mulipola, the Tigers have lost significant power and international experience up front.
The absence of Manu Tuilagi, sidelined with a recurrence of a groin injury, also takes a major weapon out of their armoury.
But Tigers will still roll into town with the likes of All Black World Cup winner Brad Thorn, Fijian try machine Vereniki Goneva and England half-backs Ben Youngs and Freddie Burns in their ranks, not to mention Ystradgynlais's Owen Williams, who is set to make his first appearance at Parc y Scarlets since his controversial move to Welford Road in 2013.
"Leicester are another quality side," added Pivac. "With guys coming back from injury I am expecting them to be strong and we can't drop away from the level of intensity we showed for 80 minutes in Toulon.
"When you have one lapse quality sides will put you to the sword.
"There are plenty of good sides in this competition, but clearly we have already been to play one of the best and after that match last Sunday the boys were disappointed that they didn't come away with anything.
"They have shown, collectively, if we all put in the effort and everyone applies themselves, we can compete against all sides at this level.
"It is going to be another big occasion and one I am really looking forward to."
The issue for Pivac is to get his side to back up their Toulon performance six days on.
The Scarlets have been a model of inconsistency in recent seasons with many of their best European displays coming on the road — Northampton, Castres, Harlequins, Racing Metro, and at the Stade Felix Mayol last Sunday.
At Parc y Scarlets, they haven't won a European tie since beating Castres in November 2011 with Northampton, Munster, Exeter, Leinster, Clermont (twice) and Harlequins having all won at the Pemberton venue since.
With a side boasting eight of Warren Gatland's November squad, the West Walians possess plenty of quality, both behind the scrum and in the front five, where Leicester's traditional strength has been.
They will also have John Barclay and Aaron Shingler — both ignored this week by their national selectors — keen to prove a point or two.
In the true traditions of European competition, the Scarlets are already in must-win territory in their brutal pool.
Pivac insists his players have taken belief and confidence from their performance on the Cote d'Azur.
But if they do harbour any ambitions in Europe this season, they need to start delivering in front of their own fans.
![SCARLETS v LEICESTER PREVIEW: Can Scarlets stop the Tigers inflicting another European wound? SCARLETS v LEICESTER PREVIEW: Can Scarlets stop the Tigers inflicting another European wound?]()