Just eight teams remain in the Champions Cup as they take the field this weekend to narrow that number to just four.
We have picked out eight of the best head to heads to keep an eye on with the action kicking off at the Stade Marcel-Deflandre before concluding at the Stade de Marcel Michelin.
Pierre Bourgarit v Akker van der Merwe - La Rochelle v Sale Sharks
Two hookers with extremely similar approaches to the game. Pierre Bourgarit and Akker van der Merwe are both abrasive and effective ball carriers willing and able to break through defences and score long-range tries but are just as strong in close.
Bourgarit is well within the mix with the French national team but struggling to grab good minutes while Akker van der Merwe is in the kind of form that may just get him a look back into the Springbok squad.
The two both have their shortcomings at set-piece time and have made improvements in recent games in that department. This clash will definitely be entertaining.
If there was a time for Joe Simmonds to step up and make a massive statement for test recognition, there would be no better time than Saturday. The uncapped 24-year-old Exeter captain faces off against the veteran Leinster and Ireland captain in Jonathan Sexton.
Sexton is one of the best game managing flyhalves in world rugby and if Simmonds is able to rattle the veteran flyhalf, then Eddie Jones may just be convinced enough to give him a shot - especially if Owen Farrell and potentially George Ford are away with the Lions. Sexton, meanwhile, will be looking to extend his good run of form that has him firmly in the conversation for a starting lines jersey.
Sam Simmonds v Jack Conan - Exeter Chiefs v Leinster
Two players that don't need too much introduction but simply put they are both in stellar form.
Both are excellent with ball in hand and just as effective on defence. Simmonds has starred on defence in the Champions Cup this season and heads into the quarter-finals having won more turnovers (6) than any other player and has completed 18/18 tackles and averaged six metres gained per carry, the fourth-best rate by a forward (14+ carries)
Another head to head in the centres that will definitely be worth keeping an eye on. Louis Picamoles v Jordan Joseph would have been one of the picks of the round but the former French International is not registered for the Champions Cup for Bordeaux. Therefore, we will settle the other battle of the young v the experienced.
Cameron Woki v Wenceslas Lauret - Bordeaux v Racing 92
Cameron Woki is yet another young star in France that is pushing for more minutes in the test jersey. He fronts up against the experienced Wenceslas Lauret.
With both teams fielding strong forward packs on Sunday, the likes of Woki and Lauret will be key in trying to force turnovers and alternatively creating quick ball for their side.
Both players are strong defensively and can be physically dominant.
Damian Penaud v Matthis Lebel - Clermont v Toulouse