Stade Francais stunned triple European champions Toulon with a 33-16 success to reach the Top 14 final.
French domestic mayhem, another Super Rugby star and a crying captain feature in Rupert Cox's weekly blog.
Clermont joined Toulon at the Top 14 summit with a 22-19 win over the reigning champions at the Stade Marcel Michelin.
Grenoble all but secured their Top 14 status for another with a 32-11 thumping of title hopefuls Toulouse.
Lyon were relegated from the Top 14 for the second time in three years after falling to a 28-10 defeat at Oyonnax.
Toulon returned to Top 14 duty with a comprehensive 37-21 demolition of struggling Castres.
Mali Hingani's try in the last move of the match snatched a dramatic 32-29 win for La Rochelle over Toulon.
Oyonnax stunned Clermont Auvergne at the Stade Marcel-Michelin and Toulon capitalised by winning away in Grenoble.