French heavyweights Biarritz and Toulouse both crashed to defeat in the Top 14, but Stade Francais continued to dominate.
There was also a much needed 17-12 win for Tim Lane’s Brive team against Montpellier.
Clermont stunned Toulouse with an emphatic 46-9 win, while four South Africans were in the Agen line-up that edged out Biarritz 20-18.
Stade comfortably dealt with Albi 25-12 for a ninth successive win.
Montauban upset Perpignan 18-13, Narbonne were 25-12 winners against Bayonne and Castres beat Bourgoin 18-16.