Stade Francais ran in 50 points as they comprehensively defeated Benetton Treviso 50-17 at Stadio Comunale di Monigo.
Paul Williams scored a brace of tries, while six other players crossed the line for the Top 14 side.
Waisea Vuidravuwalu, Julien Arias, Meyer Bosman, Sylvain Nicolas and Sergio Parisse all dotted down in a one-sided rout.
Jules Plisson kicked six goals and a penalty to reach the half-century.
The home side's three scores came from Sam Christie,Simone Ragusi and Marco Lazzaroni.