A quick guide to Northampton Saints European opponents and how the new competition works.
Northampton Saints are preparing for an open top bus ride through the centre of town to celebrate their premiership final victory.
The relentless kicking accuracy of Stephen Myler helps seal the win for Saints
Speaking after defeat in the Aviva Premiership Semi-Final to Northampton Saints, Director of Rugby Richard Cockerill said:
"We gave everything, it's been tough year, we were close to winning we could've won it if we'd managed the game a bit better at times and our discipline had been a bit sharper but Saints are a good side, they played well, they took their opportunities and that's life"
Northampton Saints have beaten the Leicester Tigers 21-20 in the Rugby Union Premiership semi-final. It means the Saints will now play at Twickenham.
It is not just local pride and the bragging rights that are at stake tonight, but also a place in the Premiership Final, as rivals Leicester Tigers and Northampton Saints square-up.
The Tigers welcome back six internationals for their trip to Franklin's Garden, including Niki Goneva.
Meanwhile, George Pisi and Samu Manoa will be among those re-joining the starting 15 for Saints.
Northampton will be hoping for revenge after Leicester beat them in the final last year, so tonight's match has all the ingredients for a cracker.
Richard Cockerill, Director of Rugby at Leicester Tigers, and player, Tom Croft, have been looking ahead to the encounter.
Northampton Saints beat Saracens 20-16 at Franklin's Gardens in the LV= Cup.
The Heineken Cup 2013-2014 fixtures have been released, with current Aviva Premiership champions Leicester Tigers playing Ulster Rugby on October 11.
The Northampton Saints will play Castres Olympique the day after.
England Head Coach Stuart Lancaster has named five Northampton Saints players in his side to face Argentina on Saturday.
Flanker Tom Wood will captain the side, and scrum-half Lee Dickson will also start, in the first of the two tests.
The substitutes include prop Paul Doran-Jones, lock Courtney Lawes and full-back Ben Foden from the Saints. And they will be joined by Worcester Warriors flanker Matt Kvesic, who will make his debut for England should he come off the bench.
Leicester Tigers manager spoke to ITV News Central after the game yesterday against Northampton Saints.
Leicester Tigers came away with the Aviva Premiership trophy after a thrilling 37 - 17 game at Twickenham.
MATCH REPORT Saints denied in Twickenham thriller http://t.co/aHpCHXLV20