Perpignan slumped to their third consecutive defeat on Saturday despite providing four of the eleven tries scored in Clermont!
Toulon scored their third straight win on the road in Mont-de-Marsan where they also collected a bonus point to move level at the top of the standings with Biarritz.
Montpellier ran four tries past Agen to secure a bonus point while Castres scored three tries in their second consecutive win at home over Bayonne.
Racing couldn't get over the whitewash but were nevertheless too strong for Bordeaux-BÃ¨gles in Paris.
Earlier in the day, Biarritz stayed top of the table thanks to victory over Toulouse.
Grenoble v Stade FranÃ§ais - Match report here
Biarritz 22-17 Toulouse - Match report here
Castres 31-10 Bayonne
Clermont 53-31 Perpignan
Montpellier 32-15 Agen
Racing MÃ©tro 18-7 Bordeaux-BÃ¨gles
Mont-de-Marsan 15-29 Toulon
ASM Clermont Auvergne 53-31 USA Perpignan
Parc des Sports Marcel Michelin, Clermont Ferrand
A crazy game as Clermont outscored USAP seven tries to four to climb.
Perpignan's evening got off to the worst possible start when veteran prop Nicolas Mas was forced off after just five minutes with a torn hamstring. He is expected to be out for six to eight weeks
The result never looked in doubt when Clermont headed to the changing rooms with a 27-10 lead. But when Luke Narraway and Lifeimi Maf touched down in the space of four minutes, it looked like the hosts might miss out on the bonus despite their six tries.
But Julien Bonnaire's second try of the afternoon ensured that Clermont would get all five points and climb into the leading trio.
Tries: Bonnaire 2, Parra, Nakaitaci, Jacquet, Vermeulen, Stanley
Cons: Parra 6
Pens: Parra 2
Tries: Piukala 2, Narraway, Mafi
Cons: Bosch 2, Mele
Clermont:15 Lee Byrne, 14 Sitiveni Sivivatu , 13 Benson Stanley , 12 Wesley Fofana , 11 Naipolioni Nalaga , 10 Brock James , 9 Morgan Parra, 8 Damien Chouly, 7 Alexandre Lapandry, 6 Julien Bonnaire, 5 Nathan Hines, 4 Loic Jacquet, 3 Davit Zirakashvili, 2 Ti'i Paulo, 1 Vincent Debaty.
Replacements: 16 Benoit Cabello , 17 Thomas Domingo , 18 Julien Pierre, 19 Elvis Vermeulen, 20 Ludovic Radosavljevic, 21 Regan King, 22 Noa seru Nakaitaci, 23 Daniel Kotze,
Perpignan:15 Gavin Hume, 14 Farid Sid, 13 Lifeimi Mafi, 12 Sione Piukala, 11 Armand Batlle, 10 Gilles Bosch, 9 Florian Cazenave, 8 Luke Narraway, 7 Daniel Leo, 6 Jean pierre Perez, 5 Robins Tchale watchou, 4 Luke Charteris, 3 Nicolas Mas, 2 Guilhem Guirado, 1 Sona Taumalolo.
Replacements: 16 Romain Terrain, 17 Jerome Schuster, 18 Sebastien Vahaamahina, 19 Bertrand Guiry, 20 David Mele, 21 Richard Haughton, 22 Alasdair Strokosch, 23 Jeremy Castex,
Castres Olympique 31-10 Aviron Bayonnais
Stade Pierre Antoine, Castres
A dominant performance from Castres underlined their credentials as play-off contenders.
Jean Marmouyet's early score gave Bayonne a 7-0 lead but Castres soon took control of the match to record their second win.
Another excellent kicking display from Rory Kockott and two well-worked second half tries from wing Romain Martial and lock Rodrigo Capo Ortega ensured victory for CO.
Tries: Dulin, Martial, CapÃ³ Ortega
Cons: Kockott 2
Pens: Kockott 4
Castres:15 Brice Dulin, 14 Romain Martial , 13 Romain Cabannes , 12 Daniel Kirkpatrick , 11 Marc Andreu , 10 Pierre Bernard , 9 Rory Kockott, 8 Iosefa Tekori, 7 Yannick Caballero, 6 Jan de bruin Bornman, 5 Rodrigo Capo ortega, 4 Matthias Rolland, 3 Karena Wihongi, 2 Brice Mach, 1 Saimone Taumoepeau,
Replacements: 16 Marc antoine Rallier , 17 Mihaita Lazar , 18 Christophe Samson, 19 Antonie Claassen, 20 Romain Teulet, 21 Seremaia Baikeinuku, 22 Maxwell Evans, 23 Michael Coetzee,
Bayonne:15 Cedric Heymans , 14 Bastien Fuster, 13 Thibault Lacroix, 12 Gabiriele Lovobalavu, 11 Joe Rokocoko, 10 Jacques louis Potgeiter, 9 Cedric Garcia, 8 Marc Baget, 7 Jean joseph Marmouyet, 6 Dwayne Haare, 5 Mark Chisholm, 4 Abdellatif Boutaty, 3 Renaud Boyoud, 2 Gregory Arganese, 1 Aretz Iguiniz.
Replacements: 16 David Roumieu, 17 Vitolio Manukula, 18 Robin Linde, 19 Julien Puricelli, 20 Mike Phillips, 21 Benjamin Boyet, 22 Lionel Mazars, 23 Nemiah Tialata.
Montpellier HÃ©rault Rugby 32-15 SU Agen
Stade Yves Du Manoir, Montpellier
Montpellier backed-up their win over Clermont last week with a bonus-point victory at home.
The hosts led 10-3 at the break but Agen competed well and it was anyone's game at the hour mark.
However three tries in the last quarter ( Carraro, Nagusa, Tomas) ensured that Montpellier finished the weekend in the top half of the standings.
Tries: Jgenti, Carraro, Nagusa, Tomas
Cons: Paillaugue 2, Tomas
Pens: Paillaugue 2
Pens: Barnard 5
Yellow cards: Erbani (Agen - 26th min); Watremez (Montpellier - 78th min); Agula (Agen - 78th min)
Montpellier:15 Jean baptiste Peyras, 14 Timoci Nagusa, 13 Matthew Carraro, 12 Shontayne Hape, 11 Yohann Artru, 10 Francois Trinh duc, 9 Benoit Paillaugue, 8 Alex Tulou, 7 Remy Martin, 6 Fulgence Ouedraogo, 5 Mamuka Gorgodze, 4 Hendrikus Hancke, 3 Giorge Jgenti, 2 Michael Ladhuie, 1 Mikheil Nariashvili.
Replacements: 16 Erasmus Jansen van vuuren, 17 Yvan Watremez, 18 Thibaut Privat, 19 Alexandre Bias, 20 Julien Tomas, 21 Thomas Combezou, 22 Pierre Berard, 23 Vincent Pelo.
Agen:15 Silvere Tian, 14 Jean francois Coux, 13 Benjamin Petre, 12 Junior Pelesasa, 11 Romain Edmond Samuel, 10 Conrad Barnard, 9 Sylvain Dupuy, 8 Remi Vaquin, 7 Ueleni Fono, 6 Jean Monribot, 5 Ross Skeate, 4 Esteban Lozada, 3 Euan Murray, 2 Jalil Narjissi, 1 Bernard N nomo.
Replacements: 16 Semisi Telefoni, 17 John Schwalger, 18 William Demotte, 19 Antoine Erbani, 20 Mathieu Loree, 21 Raphael Lagarde, 22 Belisario Agulla, 23 Jonathan Garcia.
Racing-MÃ©tro 18-7 Union Bordeaux-BÃ¨gles
Stade Yves Du Manoir - Colombes (Paris)
It wasn't pretty but Racing were pateint enough to get the job done, thanks to the accurate goal-kicking of full-back Gaetan Germain, who landed all the hosts points from the tee.
UBB scored the only try of the game in the 78th minutes when lock Cameron Treloar finished off a 100m long