Cardiff: 15 Cam Winnett, 14 Gabriel Hamer-Webb, 13 Rey Lee-Lo, 12 Rory Jennings, 11 Harri Millard, 10 Callum Sheedy, 9 Johan Mulder, 8 Alun Lawrence, 7 Alex Mann, 6 Ben Donnell, 5 Seb Davies, 4 Josh McNally, 3 Rhys Litterick, 2 Liam Belcher (captain), 1 Danny Southworth.
Replacements: 16 Efan Daniel, 17 Corey Domachowski, 18 Keiron Assiratti, 19 Teddy Williams, 20 James Botham, 21 Thomas Young, 22 Ellis Bevan, 23 Tinus de Beer.
Lions: 15 Quan Horn, 14 Richard Kriel, 13 Manuel Rass, 12 Marius Louw, 11 Edwill van der Merwe, 10 Gianni Lombard, 9 Nico Steyn, 8 Francke Horn (captain), 7 Ruan Venter, 6 JC Pretorius, 5 Darrien Landsberg, 4 Ruben Schoeman, 3 Asenathi Ntlabakanye, 2 PJ Botha, 1 Juan Schoeman.
Replacements: 16 Franco Marais, 17 SJ Kotze, 18 RF Schoeman, 19 Ruan Delport, 20 Siba Qoma, 21 Layton Horn, 22 Jarod Cairns, 23 Henco van Wyk.
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Glasgow Warriors: 15 Kyle Rowe, 14 Sebastian Cancelliere, 13 Ollie Smith, 12 Stafford McDowall, 11 Kyle Steyn (captain), 10 Adam Hastings, 9 George Horne, 8 Jack Mann, 7 Sione Vailanu, 6 Euan Ferrie, 5 Alex Samuel, 4 Jare Oguntibeju, 3 Patrick Schickerling, 2 Johnny Matthews, 1 Jamie Bhatti
Replacements: 16 Grant Stewart, 17 Nathan McBeth, 18 Sam Talakai, 19 JP du Preez, 20 Gregor Brown, 21 Matt Fagerson, 22 Ben Afshar, 23 Duncan Weir.
Munster: 15 Ben O’Connor, 14 Seán O’Brien, 13 Tom Farrell, 12 Alex Nankivell, 11 Andrew Smith, 10 Tony Butler, 9 Paddy Patterson, 8 Gavin Coombes, 7 John Hodnett, 6 Alex Kendellen, 5 Tom Ahern, 4 Fineen Wycherley, 3 Stephen Archer, 2 Diarmuid Barron (captain), 1 Jeremy Loughman.
Replacements: 16 Danny Sheahan, 17 Josh Wycherley, 18 John Ryan, 19 Brian Gleeson, 20 Ruadhán Quinn, 21 Ethan Coughlan, 22 Gordon Wood, 23 Rory Scannell.
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Sharks: 15 Henry Immelman, 14 Yaw Penxe, 13 Jurenzo Julius, 12 Ethan Hooker, 11 Makazole Mapimpi, 10 Jordan Hendrikse, 9 Jaden Hendrikse, 8 Siya Kolisi (captain), 7 Vincent Tshituka, 6 Phepsi Buthelezi, 5 Emile van Heerden, 4 Jason Jenkins, 3 Vincent Koch, 2 Bongi Mbonambi, 1 Ox Nche.
Replacements: 16 Fez Mbatha, 17 Ntuthuko Mchunu, 18 Hanro Jacobs, 19 Corné Rahl, 20 James Venter, 21 Bradley Davids, 22 Francois Venter, 23 Andre Esterhuizen.
Zebre:15 Geronimo Prisciantelli (captain), 14 Scott Gregory, 13 Fetuli Paea, 12 Filippo Drago, 11 Gesi Alessandro, 10 Giovanni Montemauri, 9 Alessandro Fusco, 8 Davide Ruggeri, 7 Luca Andreani, 6 Giacomo Ferrari, 5 Matteo Canali, 4 Francesco Ruffolo, 3 Juan Pitinari, 2 Tommaso di Barolomeo, 1 Luca Rizzoli.
Replacements: 16 Giampietro Ribaldi, 17 Muhamed Hasa, 18 Ion Neculai, 19 Leonard Krumov, 20 Bautista Stavile, 21 Jacopo Bianchi, 22 Thomas Dominguez, 23 Enrico Lucchin.
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Benetton: 15 Rhyno Smith, 14 Ignacio Mendy, 13 Tommaso Menoncello, 12 Ignacio Brex, 11 Paolo Odogwu, 10 Jacob Umaga, 9 Andy Uren, 8 Toa Halafihi, 7 Manuel Zuliani, 6 Alessandro Izekor, 5 Eli Snyman (captain), 4 Scott Scrafton, 3 Simone Ferrari, 2 Bautista Bernasconi, 1 Thomas Gallo.
Replacements: 16 Agustin Creevy, 17 Mirco Spagnolo, 18 Giosué Zilocchi, 19 Federico Ruzza, 20 Riccardo Favretto, 21 Michele Lamaro, 22 Alessandro Garbisi, 23 Tomas Albornoz.
Edinburgh: 15 Wes Goosen, 14 Matt Currie, 13 James Lang, 12 Mosese Tuipoluto, 11 Ross McCann, 10 Ross Thompson, 9 Ben Vellacott (captain), 8 Magnus Bradbury, 7 Hamish Watson, 6 Ben Muncaster, 5 Sam Skinner, 4 Marshall Sykes, 3 Paul Hill, 2 Ewan Ashman, 1 Boan Venter
Replacements: 16 Paddy Harrison, 17 Robin Hislop, 18 D’Arcy Rae, 19 Glen Young, 20 Freddy Douglas, 21 Ali Price, 22 Cammy Scott, 23 Jack Brown
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Scarlets: 15 Ioan Nicholas, 14 Macs Page, 13 Joe Roberts, 12 Eddie James, 11 Ellis Mee, 10 Ioan Lloyd, 9 Gareth Davies, 8 Taine Plumtree, 7 Josh Macleod (captain), 6 Vaea Fifita, 5 Sam Lousi, 4 Alex Craig, 3 Sam Wainwright, 2 Marnus van der Merwe, 1 Alec Hepburn
.
Replacements: 16 Ryan Elias, 17 Kemsley Mathias, 18 Henry Thomas, 19 Jarrod Taylor, 20 Dan Davis, 21 Archie Hughes, 22 Charlie Titcombe, 23 Tomi Lewis.
Stormers: 15 Warrick Gelant, 14 Ben Loader, 13 Wandisile Simelane, 12 Dan du Plessis, 11 Leolin Zas, 10 Sacha Feinberg-Mngomezulu, 9 Herschel Jantjies, 8 Evan Roos, 7 Marcel Theunissen, 6 Deon Fourie, 5 Ruben van Heerden, 4 Salmaan Moerat (captain), 3 Frans Malherbe, 2 Joseph Dweba, 1 Ali Vermaak.
Replacements: 16 André-Hugo Venter, 17 Brok Harris, 18 Sazi Sandi, 19 Gary Porter, 20 Willie Engelbrecht, 21 Dewaldt Duvenage, 22 Jurie Matthee, 23 Damian Willemse.
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Bulls: 15 Willie le Roux, 14 Sebastian de Klerk, 13 David Kriel, 12 Harold Vorster, 11 Stravino Jacobs, 10 Keagan Johannes, 9 Embrose Papier, 8 Cameron Hanekom, 7 Jannes Kirsten, 6 Marcell Coetzee (captain), 5 JF van Heerden, 4 Ruan Vermaak, 3 Wilco Louw, 2 Akker van der Merwe, 1 Alulutho Tshakweni.
Replacements: 16 Johan Grobbelaar, 17 Jan-Hendrik Wessels, 18 Mornay Smith, 19 Reinhardt Ludwig, 20 Marco van Staden, 21 Nizaam Carr, 22 Zak Burger, 23. Devon Williams.
Leinster: 15 Jimmy O’Brien, 14 Tommy O’Brien, 13 Hugh Cooney, 12 Jordie Barrett, 11 Andrew Osborne, 10 Ross Byrne, 9 Luke McGrath (captain), 8 James Culhane, 7 Will Connors, 6 Max Deegan, 5 Diarmuid Mangan, 4 RG Snyman, 3 Rabah Slimani, 2 John McKee, 1 Jack Boyle.
Replacements: 16 Stephen Smyth, 17 Ivan Soroka, 18 Thomas Clarkson, 19 Brian Deeny, 20 Alex Soroka, 21 Scott Penny, 22 Fintan Gunne, 23 Ciarán Frawley.
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Dragons: 15 Huw Anderson, 14 Rio Dyer, 13 Joe Westwood, 12 Aneurin Owen, 11 Ashton Hewitt, 10 Will Reed, 9 Rhodri Williams, 8 Aaron Wainwright, 7 Harrison Keddie, 6 Shane Lewis-Hughes, 5 George Nott, 4 Matthew Screech, 3 Chris Coleman, 2 Elliot Dee, 1 Rodrigo Martinez
Replacements: 16 Brodie Coglan, 17 Dylan Kelleher-Griffiths, 18 Paula Latu, 19 Steve Cummins, 20 Taine Basham, 21 Dane Blacker, 22 Josh Thomas, 23 Jared Rosser
Ulster: 15 Stewart Moore, 14 Michael Lowry, 13 James Hume, 12 Stuart McCloskey, 11 Jacob Stockdale, 10 Jack Murphy, 9 Nathan Doak, 8 James McNabney, 7 Nick Timoney, 6 David McCann, 5 Matthew Dalton, 4 Alan O’Connor (captain), 3 Tom O’Toole, 2 Rob Herring, 1 Callum Reid.
Replacements: 16 John Andrew, 17 Sam Crean, 18 Scott Wilson, 19 Kieran Treadwell, 20 Reuben Crothers, 21 John Cooney, 22 Aidan Morgan, 23 Zac Ward.
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Ospreys: 15 Jack Walsh, 14 Dan Kasende, 13 Evardi Boshoff, 12 Keiran Williams, 11 Keelan Giles, 10 Dan Edwards, 9 Kieran Hardy, 8 Morgan Morris, 7 Justin Tipuric (captain), 6 Morgan Morse, 5 Adam Beard, 4 James Ratti, 3 Tom Botha, 2 Sam Parry (captain), 1 Garyn Phillips
Replacements: 16 George McGuigan, 17 Steffan Thomas, 18 Ben Warren, 19 James Fender, 20 Tristan Davies, 21 Reuben Morgan-Williams, 22 Phil Cokanasiga, 23 Iestyn Hopkins
Connacht: 15 Piers O’Conor, 14 Finn Treacy, 13 Hugh Gavin, 12 Cathal Forde, 11 Shayne Bolton, 10 Josh Ioane, 9 Caolin Blade, 8 Paul Boyle, 7 Shamus Hurley-Langton, 6 Josh Murphy, 5 Joe Joyce (captain), 4 Darragh Murray, 3 Jack Aungier, 2 Dave Hefferman, 1 Denis Buckley
Replacements: 16 Dylan Tierney-Martin, 17 Temi Lasisi, 18 Sam Illo, 19 Oisin Dowling, 20 David O’Connor, 21 Matthew Devine, 22 JJ Hanrahan, 23 Sean Jansen