Greig Laidlaw's boot and a pair of tries from Apisai Naqalevu helped Clermont Auvergne battle back to beat Stade Francais on the road.
Gloucester returned to the play-offs for the first time since 2011 despite losing to Worcester Warriors, who sealed Premiership safety.
Bernard Laporte wanted Joe Schmidt to take over as France head coach, but Fabien Galthie will succeed Jacques Brunel.
It was a controversial win for Argentine hosts Jaguares, whose try prior to half-time was awarded by TMO for a 17-15 lead.