Saturday's Challenge Cup teams

All the team news ahead of Saturday's Challenge Cup, including Sale's visit to Castre and Edinburgh's trip to London Irish.

Enisei-STM vs Brive (7am)

Enisei-STM coach Vakil Valeev will be hoping his Russian rookies show continued improvement when hosting Brive in Sochi. The Russian side put up creditable performances in their Pool 1 defeats against Connacht and Newcastle last month.

Now Valeev's men face a tough test in the form of French Top 14 outfit who are are looking to bounce back from their defeat to Connacht in round 2.

"These matches are very difficult for us and the opponents are a lot stronger but we will continue to strive to improve because this is an important opportunity for Russian rugby," said Valeev.

"We have returned home from playing Newcastle and worked very hard on our game and cutting out the mistakes we made. We hope to improve our attacking play as against Newcastle we did not threaten as much as we would have liked to.

"But we are gathering information all the time in this tournament and it is only going to help us get better and we want to show that improvement."

Enisei-STM: 15 Igor Kurashov, 14 Robert Malneek, 13 David Kacharava, 12 Mikhail Babaev, 11 Denis Simplikevich, 10 Iurii Kushnarev, 9 Jurijs Baranovs, 8 Anton Rudoi, 7 Mikhail Sidorov, 6 Plavel Butenko, 5 Viacheslav Krasylnyk, 4 Uldis Saulite, 3 Innokentiy Zykov, 2 Nazir Gasanov, 1 Alexey Volkov.

Replacements: 16 Stanislav Selskii, 17 Andrei Polivalov, 18 Evgenii Pronenko, 19 Andrey Temnov, 20 Ramil Gaisin, 21 Alexey Shcherban, 22 Yaroslav Rechnev, 23 Dmitrii Krotov.

Brive: 15 Anderson Neisen, 14 Atila Septar, 13 Arnaud Mignardi, 12 Thomas Laranjeira, 11 Benito Masilevu, 10 Romain Sola, 9 Nicolas Bézy, 8 William Whetton, 7 Poutasi Luafutu, 6 Hugues Briatte, 5 Wilhelm Steenkamp, 4 Victor Lebas, 3 Yusuf Tuncer, 2 Francois Da Ros, 1 Damien Lavergne.

Replacements: 16 Thomas Acquier, 17 Goderzi Shvelidze, 18 Kevin Buys, 19 Fabien Sanconnie, 20 Said Hireche, 21 Péniami Narisia, 22 David Delarue, 23 Jean-Baptiste Pejoine.

Calvisano v Harlequins (1.30pm)

Inside centre Winston Stanley and flanker Archie White will make their senior debuts for Harlequins against Calvisano.

The visitors have made a total of 12 changes for the tie in Italy with seven of the starting forward pack graduating from the club's youth system.

Mark Lambert, Rob Buchanan and Will Collier will start in the front row, with Charlie Matthews named in the second row. White is joined in the back row by Luke Wallace and captain Jack Clifford.

Sam Twomey, Ollie Lindsay-Hague and Mat Luamanu are out injured.

Calvisano: 15 Matteo Minozzi, 14 Ben De Jager, 13 Pablo Canavosio, 12 Alberto Chiesa, 11 Marco Susio, 10 Filippo Buscema, 9 Riccardo Raffaele, 8 Renato Giammarioli, 7 Maxime Mbanda, 6 Nicola Belardo, 5 Davide Zanetti, 4 Agustin Cavalieri, 3 Rudy Biancotti, 2 Lorenzo Giovanchelli, 1 Sami Panico.

Replacements: 16 Luhandre Luus, 17 Gabriele Morelli, 18 Salvatore Costanzo, 19 Michele Andreotti, 20 Jim Tuivaiti, 21 Matteo Archetti, 22 Daniele Di Giulio, 23 Giacomo De Santis.

Harlequins: 15 Tim Swiel, 14 Ross Chisholm, 13 Matt Hopper, 12 Winston Stanley, 11 Tim Visser, 10 Ben Botica, 9 Karl Dickson, 8 Jack Clifford, 7 Luke Wallace, 6 Archie White, 5 Charlie Matthews, 4 James Horwill, 3 Will Collier, 2 Rob Buchanan, 1 Mark Lambert.

Replacements: 16 Dave Ward, 17 Owen Evans, 18 Kyle Sinckler, 19 George Merrick, 20 Kieran Treadwell, 21 Tito Tebaldi, 22 Harry Sloan, 23 Charlie Walker.

Dragons v Pau (2.30pm)

Dragons are top of Pool 2 after two matches and have made just one change for Saturday's visit of Pau.

Flanker Ollie Griffiths, 20, replaces Nic Cudd in the only change from the side that beat Munster.

Pau will line out with former Scotland tight-head prop Euan Murray, but have omitted ex-New Zealand All Blacks centre Conrad Smith and out-half Colin Slade.

Lyn Jones' side beat Sale Sharks in their opening game before suffering a narrow 32-29 defeat to Castres.

Hooker Elliot Dee and scrum-half Luc Jones will be among the replacements as Dragons face Pau for their first time in their history.

Dragons: 15 Carl Meyer, 14 Tom Prydie, 13 Adam Hughes, 12 Adam Warren, 11 Ashton Hewitt, 10 Dorian Jones, 9 Sarel Pretorius, 8 Taulupe Faletau, 7 Ollie Griffiths, 6 Lewis Evans, 5 Rynard Landman, 4 Matthew Screech, 3 Brok Harris, 2 T Rhys Thomas, 1 Phil Price.

Replacements: 16 Elliot Dee, 17 Lloyd Fairbrother, 18 Shaun Knight, 19 Cory Hill, 20 Ed Jackson, 21 Luc Jones, 22 Jason Tovey, 23 Ross Wardle.

Pau: 15 Romain Buros, 14 Marika Vunibaka, 13 Jale Vatubua, 12 Watisoni Votu, 11 Elijah Niko, 10 Charly Malie, 9 Samuel Marques, 8 Brice Monzeglio, 7 Josefa Ulago Domolailai, 6 Sean Dougall, 5 Claude Dry, 4 Cameron Pierce, 3 Euan Murray, 2 Mehdi Boundjema, 1 Chris King.

Replacements: 16 Thomas Bianchin, 17 Julien Jacquot, 18 Giorgi Natsarashvili, 19 Daniel Ramsay, 20 Loic Bernad, 21 Thierry Lacrampe, 22 Pierre Dupouy, 23 Mosese Ratuvou.

London Irish v Edinburgh (3pm)

Shane Geraghty returns at out-half for London Irish with coach Tom Coventry making five changes following defeat to Harlequins.

Edinburgh give first starts to back row Jamie Ritchie and centre Michael Allen.

Wingers Tom Brown and Otulea Katoa and centre Andries Strauss return while Nathan Fowles and Greig Tonks form a new half-back pairing.

Scotland international Sean Maitland returns at full-back for the Exiles and joins Andrew Fenby and Alex Lewington in the back three.

Conor Gilsenan makes a first start of the season in the back row while Blair Cowan is named on the bench.

Dougie Fife moves from wing to full-back for Edinburgh to accommodate Brown and there's a new front row of Rory Sutherland, captain Neil Cochrane and John Andress.

Hamish Watson moves to openside with teenager Ritchie at blindside.

London Irish: 15 Sean Maitland, 14 Alex Lewington, 13 Aseli Tikoirotuma, 12 Johnny Wililams, 11 Andrew Fenby, 10 Shane Geraghty, 9 Brendan McKibbin, 8 Ofisa Treviranus, 7 Conor Gilsenan, 6 Luke Narraway, 5 Jebb Sinclair, 4 Eoin Sheriff, 3 Ben Franks, 2 Gerard Ellis, 1 Tom Court.

Replacements: 16 Jimmy Stevens, 17 Tom Smallbone, 18 Leo Halavatau, 19 David Sisi, 20 Blair Cowan, 21 Darren Allinson, 22 Theo Brophy Clews, 23 Dom Waldouck.

Edinburgh: 15 Dougie Fife, 14 Tom Brown, 13 Michael Allen, 12 Andries Strauss, 11 Otulea Katoa, 10 Greig Tonks, 9 Nathan Fowles, 8 Cornell Du Preez, 7 Hamish Watson, 6 Jamie Ritchie, 5 Alex Toolis, 4 Anton Bresler, 3 John Andress, 2 Neil Cochrane, 1 Rory Sutherland.

Replacements: 16 George Turner, 17 Grant Shiells, 18 Simon Berghan, 19 Magnus Bradbury, 20 Chris Dean, 21 Sam Hidalgo-Clyne, 22 Blair Kinghorn, 23 Damien Hoyland.

Castre V Sale Sharks (7.45pm)

Julien Caminati and Julien Dumora are the only starters to keep their place from the Castres side which beat Montpellier in their last Top 14 game.

Scotland number eight Johnnie Beattie is among the players to return for the French team who are in Pool Two.

Sale Sharks include winger Nev Edwards and David Seymour captains the side after his recent injury with Joe Ford and James Mitchell a new half-back pairing.

The Premiership side, who are second in Pool Two, have made 12 changes in total as they look to select a number of English-qualified players.

Castres have won the only match they have played in the competition so far.

Castres: 15 Julien Caminati, 14 Romain Martial, 13 Florian Vialelle, 12 Romain Cabannes, 11 Louis Decrop, 10 Julien Dumora, 9 Antoine Dupont, 8 Johnnie Beattie, 7 Ibrahim Diarra, 6 Yannick Caballero, 5 Victor Moreaux, 4 Christophe Samson, 3 Yohan Montes, 2 Marc-Antoine Rallier, 1 Saimone Taumoepeau.

Replacements: 16 Julien Beziat, 17 Antoine Tichit, 18 Lucas Martinez, 19 Benjamin Desroche, 20 Mathieu Babillot, 21 Francois Fontaine, 22 Julien Seron, 23 Thomas Combezou.

Sale Sharks: 15 Tom Arscott, 14 Neville Edwards, 13 Will Addison, 12 Mark Jennings, 11 Charlie Ingall, 10 Joe Ford, 9 James Mitchell, 8 Mark Easter, 7 David Seymour, 6 Magnus Lund, 5 Andrei Ostrikov, 4 Jon Mills, 3 Brian Mujati, 2 Neil Briggs, 1 Eifion Lewis-Roberts.

Replacements: 16 Tommy Taylor, 17 James Flynn, 18 Ciaran Parker, 19 Josh Beaumont, 20 Cameron Neild, 21 Tim Jeffers, 22 Sam James, 23 Michael Haley.