Harlequins v Castres
Harlequins: Mike Brown; Marland Yarde, Matt Hopper, George Lowe, Aseli Tikoirotuma; Nick Evans, Danny Care; Joe Marler (Capt.), Dave Ward, Will Collier; Charlie Matthews, George Robson; Luke Wallace, Chris Robshaw, Nick Easter.
Replacements: Rob Buchanan, Mark Lambert, Kyle Sinckler, Sam Twomey, Joe Trayfoot, Karl Dickson, Jordan Turner-Hall, Ollie Lindsay-Hague.
Castres: Geoffrey Palis; Max Evans, Christopher Tuatara, Thomas Combezou, Remi Grosso; Remi Tales (Capt.), Rory Kockott; Saimone Taumoepeau, Brice Mach, Yohan Montes; Richie Gray, Piula Faasalele; Ibrahim Diarra, William Whetton, Jannie Bornman.
Replacements: Marc-Antoine Rallier, Mihaita Lazar, Paea Faanunu, Mathieu Babillot, Christophe Samson, Julien Dumora, Romain Cabannes, Cedric Garcia.
Sale v Munster
Sale: Michael Haley; Tom Brady, Johnny Leota, Sam Tuitupou, Tom Arscott; Danny Cipriani, Chris Cusiter; Eifion Lewis-Roberts, Marc Jones, Vadim Cobilas, Jon Mills, Michael Paterson, Magnus Lund, David Seymour (Capt.), Mark Easter.
Replacements: Shalva mamukashvili, Ross Harrison, Alberto de Marchi, Andrei Ostrikov, Josh Beaumont, Will Cliff, Joe Ford, Mark Jennings.
Munster: Felix Jones; Andrew Conway, Andrew Smith, Denis Hurley, Simon Zebo; Ian Keatley, Conor Murray; Dave Kilcoyne, Duncan Casey, Stephen Archer, Dave Foley, Paul O’Connell, Peter O’Mahony (Capt.), Tommy O’Donnell, CJ Stander.
Replacements: Eusebio Guinazu, James Cronin, BJ Botha, Billy Holland, Robin Copeland, Duncan Williams, JJ Hanrahan, Gerhard van den Heever.
Saracens v Clermont
Saracens: Alex Goode; Chris Ashton, Chris Wyles, Brad Barritt, David Strettle; Charlie Hodgson, Richard Wigglesworth; Richard Barrington, Jamie George, Petrus du Plessis, George Kruis, Alistair Hargreaves (Capt.), Kelly Brown, Will Fraser, Billy Vunipola.
Replacements: Schalk Brits, Rhys Gill, James Johnston, Jim Hamilton, Jackson Wray, Neil de Kock, Owen Farrell, Marcelo Bosch.
Clermont: Nick Abendanon; Noa Nakaitaci, Aurélien Rougerie, Wesley Fofana, Zac Guildford; Camille Lopez, Ludovic Radoslavjevic ; Thomas Domingo, Benjamin Kayser, Davit Zirakashvili, Jamie Cudmore, Sébastien Vahaamahina, Fritz Lee, Julien Bonnaire, Damien Chouly (Capt.).
Replacements: John Ulugia, Raphael Chaume, Clément Ric, Loic Jacquet, Julien Bardy, Thierry Lacrampe, Brock James, Benson Stanley.
Glasgow v Bath
Glasgow: Stuart Hogg; Sean Maitland, Mark Bennett, Peter Horne, Tommy Seymour; Duncan Weir, Henry Pyrgos (Capt.); Gordon Reid, Pat MacArthur, Euan Murray, Leone Nakarawa, Jonny Gray, Robert Harley, Chris Fusaro, Adam Ashe.
Replacements: Doug Hall, Jerry Yanuyanutawa, Rossouw de Klerk, Tim Swinson, Tyrone Holmes, Niko Matawalu, Finn Russell, DTH van der Merwe.
Bath: Gavin Henson; Semesa Rokoduguni, Jonathan Joseph, Kyle Eastmond, Anthony Watson; George Ford, Micky Young; Nick Auterac, Ross Batty, Henry Thomas, Stuart Hooper (Capt.), David Attwood, Dominic Day, Guy Mercer, David Sisi.
Replacements: Rob Webber, Paul James, David Wilson, Charlie Ewels, Tom Ellis, Peter Stringer, Ollie Devoto, Horacio Agulla.
Racing Metro v Northampton
Racing Metro: Brice Dulin; Juan Imhoff, Alexandre Dumoulin, Jamie Roberts, Marc Andreu; Jonny Sexton, Maxime Machenaud; Julien Brugnaut, Virgile Lacombe, Luc Ducalcon, Juandre Kruger, Francois van der Merwe (Capt.), Wenceslas Lauret, Bernard Le Roux, Antonie Claassen.
Replacements: Jeremie Maurouard, Eddy Ben Arous, Brian Mujati, Luke Charteris, Camille Gerondeau, Mike Phillips, Johannes Goosen, Yoan Audrin.
Northampton: Ben Foden; Ken Pisi, George Pisi, Luther Burrell, George North; Steve Myler, Kahn Fotuali’i; Alex Waller, Dylan Hartley (Capt.), Salesi Ma’afu, Courtney Lawes, Christian Day, Calum Clark, Tom Wood, Samu Manoa.
Replacements: Mikey Haywood, Ethan Waller, Gareth Denman, James Craig, Phil Dowson, Lee Dickson, James Wilson, Jamie Elliott.
Leicester v Ulster
Leicester: Matthew Tait; Blaine Scully, Manu Tuilagi, Owen Williams, Vereniki Goneva; Freddie Burns, Ben Youngs (Capt.); Marcos Ayerza, Leonardo Ghiraldini, Fraser Balmain, Brad Thorn, Graham Kitchener, Jamie Gibson, Julian Salvi, Jordan Crane.
Replacements: Harry Thacker, Michele Rizzo, Tiziano Pasquali, Sebastian De Chaves, Robert Barbieri, David Mele, Sam Harrison, Miles Benjamin.
Ulster: Louis Ludik; Tommy Bowe, Jared Payne, Stuart McCloskey, Craig Gilroy; Paddy Jackson, Paul Marshall; Andy Warwick, Rory Best (Capt.), Wiehahn Herbst, Lewis Stevenson, Franco Van Der Merwe, Robbie Diack, Chris Henry, Nick Williams.
Replacements: Rob Herring, Callum Black, Declan Fitzpatrick, Clive Ross, Roger Wilson, Michael Heaney, Stuart Olding, Darren Cave.
Ospreys v Treviso
Ospreys: Daniel Evans; Jeff Hassler, Andrew Bishop, Josh Matavesi, Eli Walker; Dan Biggar, Rhys Webb; Nicky Smith, Scott Baldwin, Dmitri Arhip, Lloyd Peers, Alun-Wyn Jones (Capt.), James King, Sam Lewis, Dan Baker.
Replacements: Scott Otten, Duncan Jones, Aaron Jarvis, Rynier Bernardo, Joe Bearman, Justin Tipuric, Martin Roberts, Sam Davies.
Treviso: Jayden Hayward; Angelo Esposito, Luca Morisi, Enrico Bacchin, Ludovico Nitoglia; Joe Carlisle, Alberto Lucchese; Matteo Zanusso, Albert Alfred Anae, Rupert Harden, Antonio Pavanello (Capt.), Tomas Vallejos, Simone Favaro, Alessandro Zanni, Francesco Minto.
Replacements: Davide Giazzon, Romulo Acosta, Salesi Manu, Marco Fuser, Meyer Swanepoel, Marco Barbini, Michele Campagnaro, Edoardo Gori.
Toulouse v Montpellier
Toulouse: Maxime Médard; Timoci Matanavou, Florian Fritz, Gael Fickou, Yoann Huget; Luke McAlister, Jean-Marc Doussain; Gurthro Steenkamp, Corey Flynn, Nemiah Tialata, Joe Tekori, Yoann Maestri, Yacouba Camara, Thierry Dusautoir (Capt.), Imanol Harinordoquy.
Replacements: Julien Marchand, Kisi Pulu, Census Johnston, Patricio Albacete, Edwin Maka, Sébastien Bézy, Toby Flood, Vincent Clerc.
Montpellier: Benjamin Fall; Timoci Nagusa, Rene Ranger, Wynand Olivier, Viriviri Nasagavesi; Enzo Selponi, Teddy Iribaren; Mikheil Nariashvili, Mickael Ivaldi, Nicolas Mas, Sitaleki Timani, Thibaut Privat (Capt.), Alexandre Bias, Akapusi Qera, Ben Mowen.
Replacements: Charles Geli, Yvan Watremez, Chris King, Robins Tchale Watchou, Kelian Galletier, Benoit Paillaugue, Anthony Tuitavke, Benoit Sicart.
Toulon v Scarlets
Toulon: Leigh Halfpenny; David Smith, Mathieu Bastareaud, Maxime Mermoz, Bryan Habana; Matt Giteau, Sebastien Tillous-Borde; Xavier Chiocci, Jean-Charles Orioli, Carl Hayman (Capt.), Bakkies Botha, Ali Williams, Juan Smith, Juan Fernandez Lobbe, Steffon Armitage.
Replacements: Guilhem Guirado, Alexandre Menini, Levan Chilachava, Chris Masoe, James O’Connor, Rudi Wulf, Michael Claassens, Romain Taofifenua.
Scarlets: Liam Williams; Harry Robinson, Michael Tagicakibau, Scott Williams (Capt.), Kristian Phillips; Rhys Priestland, Aled Davies; Rob Evans, Emyr Phillips, Samson Lee, Jake Ball, Johan Snyman, Aaron Shingler, John Barclay, Rory Pitman.
Replacements: Kirby Myhill, Phil John, Rhodri Jones, George Earle, James Davies, Rhodri Williams, Steven Shingler, Jordan Williams.
Leinster v Wasps
Leinster: Ian Madigan; Zane Kirchner, Gordon D’Arcy, Noel Reid, Darragh Fanning; Jimmy Gopperth, Eoin Reddan; Jack McGrath, Sean Cronin, Michael Bent, Devin Toner, Mike McCarthy, Rhys Ruddock, Dominic Ryan, Jamie Heaslip (Capt.).
Replacements: Richardt Strauss, Ed Byrne, Tadhg Furlong, Kane Douglas, Jack Conan, Isaac Boss, Mick McGrath, Luke Fitzgerald.
Wasps: Andrea Masi; Christian Wade, Elliott Daly, Alapati Leiua, Sailosi Tagicakibau; Andy Goode, Joe Simpson; Matt Mullan, Carlo Festuccia, Lorenzo Cittadini, Joe Launchbury, Bradley Davies, Ashley Johnson, James Haskell (Capt.), Nathan Hughes.
Replacements: Tom Lindsay, Simon McIntyre, Jake Cooper-Woolley, James Gaskell, Sam Jones, Charlie Davies, Rob Miller, Chris Bell.