Exeter's victory over Castres sets up a last-round blockbuster match against Munster in the final round of the Champions Cup at Thomond Park.
The Premiership outfit won 34-12 to secure a bonus-point win and move within four points of pool leaders, Munster. It means they will need to beat the Irish province away if they are to harbour hopes of progressing to the quarter-final.
For Munster, victory or a draw ensures their qualification. Alternatively, if Exeter win they will need to deny Munster a losing bonus point or win with a bonus-point so they can top the pool. The sides drew last time they faced each other, meaning the head-to-head record is up for grabs.
Exeter were boosted by the return of England back Jack Nowell who was immense against an ill-disciplined French outfit. Tudor Stroe was sent-off for a swinging forearm midway through the second half.
Heineken Champions Cup: Exeter Chiefs 34 - 12 Castres pic.twitter.com/AU07dK05wq
— Patrick Yuen (@PatrickYuen_36) January 13, 2019