Sunday's Heineken Cup quarter-final sees Leinster visit Toulon in what promises to be the match of the weekend.
Between them, the two European heavyweights have won the tournament in four of the past five years, with Toulon the current reigning champions.
They will be without Bakkies Botha and Ali Williams but Jonny Wilkinson is set to return after missing the 32-28 win over Toulouse at the weekend.
The 2003 Rugby World Cup winner goes head-to-head with Leinster legend Brian O'Driscoll, a three-time winner of the competition.
It's just one of the marquee match-ups on display at the Stade Felix Mayol, Toulon's intimidating fortress of a stadium.
They may have lost their 363-day unbeaten record at the 15,400-capacity arena, but Toulon remain extremely difficult to beat at home.
Leinster though, are one of the favourites for the Heineken Cup as well and boast 11 starters who featured for the Six Nations-winning Irish national team earlier this year.
In fact, Ireland lifted the trophy in Paris, so Toulon may be out for a little revenge on behalf of their countrymen this afternoon.
As well as O'Driscoll, Toulon will have to contend with Cian Healy, Gordon D'Arcy and Rob Kearney at full-back while Jamie Heaslip captains.
For Toulon, they boast the Armitage brothers at number eight and 15, French international battering ram Mathieu Bastareaud at centre partnering Aussie star Matt Giteau.
Toulon: 15 D Armitage, 14 Mitchell, 13 Bastareaud, 12 Giteau, 11 Smith, 10 Wilkinson (c), 9 Tillous-Borde; 1 Choicci, 2 Burden, 3 Hayman, 4 Roussouw, 5 Suta, 6 Smith, 7 Fernández Lobbe, 8 S Armitage.
Replacements: 16 Orioli, 17 Fresia, 18 Castrogiovanni, 19 Bruni, 20 Habana, 21 Mermoz, 22 Claassens, 23 Mikautadze
Leinster: 15 Kearney, 14 McFadden, 13 O'Driscoll, 12 D'Arcy, 11 Kearney, 10 Gopperth, 9 Reddan; 1 Healy, 2 Strauss, 3 Ross, 4 Toner, 5 McCarthy, 6 Ruddock, 7 Jennings, 8 Heaslip (c).
Replacements: 16 Cronin, 17 McGrath, 18 Moore, 19 Cullen, 20 Murphy, 21 Boss, 22 Madigan, 23 Kirchner