Harlequins will open the defence of their Amlin Challenge Cup crown when they travel to Stade Felix Mayol for their Friday night quarter-final showdown with Toulon on 6 April.
Harlequins, the Scarlets and Biarritz Olympique are the three Heineken Cup Pool runners-up who have qualified for the Amlin quarters, with Harlequins returning to a tournament they won when they beat Stade Français Paris 19-18 in a thrilling final in Cardiff last May.
Now all the 2012 quarter-finalists have 18 May and the final at Twickenham Stoop in their sights, Harlequins targeting a fourth tournament title with London Wasps and Brive also former winners of European titles.
London Wasps are double Heineken Cup champions, in 2004 and 2007, and lifted the Amlin silverware in 2003, while Brive took the Heineken Cup honours in 1997. And the parade of big name players includes over 20 of those who recently graced the 2012 RBS 6 Nations, with eight of the 10 Scarlets resuming club cross-border action as 2012 Grand Slam Champions for good measure.
SCARLETS (10): Jonathan Davies, George North, Rhys Priestland, Ken Owens, Scott Williams, Sean Lamont, Ben Morgan, Aaron Shingler, Lou Reed, Matthew Rees
STADE FRANÇAIS PARIS (6): Sergio Parisse,Pascal Papé, Dimitri Szarzewski, Tom Palmer, Julien Dupuy, David Attoub
HARLEQUINS (3): Chris Robshaw, Jordan Turner-Hall, Mike Brown
BIARRITZ OLYMPIQUE (2): Dimitri Yachvili, Imanol Harinordoquy
LONDON WASPS (1): Rob Webber
TOULON (1): Alexis Palisson