Exeter will face European champions Saracens who crushed Leicester Tigers 44-17. The Tigers fielded wing Telusa Veainu (who scored a try), replacement halfback Jono Kitto, and loose forwards Mike FitzGerald and Brendon O'Connor.
In the French Top 14, which still has two more rounds to play, Castres hit their straps, putting 67-20 on La Rochelle. Sitiveni Sivivatu scored a double for Castres, while David Smith scored one. La Rochelle fielded Alofa Alofa (11), Uini Atonio (3) and Hikairo Forbes (2).
Joe Rokocoko scored a try as Racing-Metro cast aside a Kiwi-less Pau 43-13.
Ma'a Nonu was at No 12 as Toulon smashed George Tilsley's Agen 52-13. Fritz Lee and Benson Stanley helped Clermont to a 36-10 win over Stade Francais. Luke McAlister slotted a penalty goal as Toulouse beat Oyonnax 25-17. No 8 Viliami Ma'afu scored a try for the relegation-bound Oyonnax.
Four goals by first five Simon Hickey were not enough to stop his Bordeaux-Begles club from losing 19-16 to Anthony Tuitavake's Montpellier.
William Whetton came off the bench as his Brive overwhelmed Grenoble, who featured Sona Taumalolo and Rory Grice, 45-24.