Stade FranÃ§ais moved up to second in the Top 14 after beating Grenoble 21-6 at Stade Jean Bouin on Friday.
Stade maintained their fine record this season at their Jean-Bouin ground to move to within one point of Clermont, who play on Saturday.
Gonzalo Quesada's side, runaway 23-0 winners over Heineken Cup champions Toulon before the break for European action, reduced Grenoble to bit-part players, the visitors only managing a brace of penalties from scrum-half James Hart.
Stade however only led 8-3 at the break thanks to a score from Geoffrey Doumayrou on 25 minutes.
The Paris side had to wait until the 69th minute for their second try from Meyer Bosman, with fellow South African Morne Steyn converting.
Steyn added three penalties in a game in which Stade fluffed a number of opportunities.
For Stade FranÃ§ais:
Tries: Doumayrou, Bosman
Pen: Steyn 3
Pen: Hart 2
Stade FranÃ§ais: 15 Hugo Bonneval, 14 Julien Arias, 13 Geoffrey Doumayrou, 12 Meyer Bosman, 11 Djibril Camara, 10 Morne Steyn, 9 Julien Dupuy, 8 Sergio Parisse (c), 7 Pierre Rabadan, 6 Antoine Burban, 5 Pascal Pape, 4 Alexandre Flanquart, 3 Rabah Slimani, 2 Laurent Sempere, 1 Heinke van der Merwe.
Replacements: 16 Michael van Vuuren, 17 Sakaria Taulafo, 18 Gerhard Mostert, 19 David Lyons, 20 Jerome Fillol, 21 Jules Plisson, 22 Paul Williams, 23 Davit Kubriashvili.
Grenoble: 15 Fabien Gengenbacher, 14 Alipati Ratini, 13 Rida Jaouher, 12 Geoffroy Messina, 11 Julien Caminati, 10 Blair Stewart, 9 James Hart, 8 Peter Kimlin, 7 Fabien Alexandre, 6 Jonathan Best, 5 Hendrik Roodt, 4 Ben Hand, 3 Dayna Edwards, 2 Anthony Hegarty, 1 Albertus Buckle.
Replacements: 16 Kenan Mutapcic, 17 Vincent Campo, 18 Naude Beukes, 19 Florian Faure, 20 Benjamin Thiery, 21 Rudi Coetzee, 22 Nicolas Bezy, 23 Richard Choirat.
Referee: Christophe Berdos
Assistant referees: Eric Soulan, Pascal Ubeda
Television match official: Jean-Claude Levrier