Stormers: 15 Wandisile Simelane, 14 Seabelo Senatla, 13 Ruhan Nel (captain), 12 Dan du Plessis, 11 Leolin Zas, 10 Jurie Matthee, 9 Stefan Ungerer, 8 Evan Roos, 7 Ben-Jason Dixon, 6 Paul de Villiers, 5 JD Schickerling, 4 Adré Smith, 3 Neethling Fouché, 2 André-Hugo Venter, 1 Vernon Matongo.
Replacements: 16 JJ Kotze, 17 Olly Reid, 18 Zachary Porthen, 19 Ruben van Heerden, 20 Ruan Ackermann, 21 Marcel Theunissen, 22 Dewaldt Duvenage, 23 Clinton Swart.
Leinster: 15 Jimmy O’Brien, 14 Tommy O’Brien, 13 Robbie Henshaw, 12 Ciarán Frawley, 11 Jordan Larmour, 10 Sam Prendergast, 9 Luke McGrath (captain), 8 James Culhane, 7 Scott Penny, 6 Ryan Baird, 5 Brian Deeny, 4 Diarmuid Mangan, 3 Rabah Slimani, 2 Gus McCarthy, 1 Jack Boyle.
Replacements: 16 John McKee, 17 Paddy McCarthy, 18 Andrew Sparrow, 19 Max Deegan, 20 Will Connors, 21 Fintan Gunne, 22 Harry Byrne, 23 Hugh Cooney.
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Glasgow Warriors: 15 Josh McKay, 14 Kyle Rowe, 13 Stafford McDowall (captain), 12 Kerr Yule, 11 Ollie Smith, 10 Dan Lancaster, 9 George Horne, 8 Jack Dempsey, 7 Rory Darge, 6 Matt Fagerson, 5 Alex Samuel, 4 Jare Oguntibeju, 3 Fin Richardson, 2 Johnny Matthews, 1 Jamie Bhatti.
Replacements: 16 Gregor Hiddleston, 17 Rory Sutherland, 18 Sam Talakai, 19 Scott Cummings, 20 Gregor Brown, 21 Euan Ferrie, 22 Jamie Dobie, 23 Adam Hastings.
Sharks: 15 Yaw Penxe, 14 Edwill van der Merwe, 13 Lukhanyo Am, 12 Francois Venter, 11 Christie Grobbelaar, 10 Jaden Hendrikse, 9 Ross Braude, 8 Vincent Tshituka (captain), 7 Manu Tshituka, 6 Phepsi Buthelezi, 5 Marvin Orie, 4 Deon Slabbert, 3 Ruan Dreyer, 2 Fez Mbatha, 1 Simphiwe Matanzima.
Replacements: 16 Eduan Swart, 17 Dian Bleuler, 18 Lee-Marvin Mazibuko, 19 Bathobele Hlekani, 20 Nick Hatton, 21 Jean Smith, 22 Jurenzo Julius, 23 Hakeem Kunene.
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Ulster: 15 Michael Lowry, 14 Zac Ward, 13 James Hume, 12 Stuart McCloskey, 11 Jacob Stockdale, 10 Jack Murphy, 9 Nathan Doak, 8 David McCann, 7 Nick Timoney, 6 Cormac Izuchukwu, 5 Harry Sheridan, 4 Iain Henderson (captain), 3 Tom O’Toole, 2 Rob Herring, 1 Callum Reid.
Replacements: 16 Tom Stewart, 17 Sam Crean, 18 Scott Wilson, 19 Matthew Dalton, 20 Juarno Augustus, 21 Conor McKee, 22 Jake Flannery, 23 Ben Carson.
Dragons: 15 Angus O’Brien (co-captain), 14 Rio Dyer, 13 Joe Westwood, 12 Aneurin Owen, 11 Jared Rosser, 10 Tinus de Beer, 9 Rhodri Williams, 8 Aaron Wainwright, 7 Harrison Keddie, 6 Shane Lewis-Hughes, 5 Ben Carter (co-captain), 4 Matthew Screech, 3 Rob Hunt, 2 Elliot Dee, 1 Wyn Jones.
Replacements: 16 Brodie Coghlan, 17 Rodrigo Martinez, 18 Dillon Lewis, 19 Levi Douglas, 20 Mackenzie Martin, 21 Che Hope, 22 Fine Inisi, 23 Huw Anderson.
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Bulls: 15 Devon Williams, 14 Cheswill Jooste, 13 David Kriel, 12 Jan Serfontein, 11 Sebastian de Klerk, 10 Keagan Johannes, 9 Embrose Papier, 8 JJ Theron, 7 Mpilo Gumede, 6 Marcell Coetzee (captain), 5 JF van Heerden, 4 Cobus Wiese, 3 Mornay Smith, 2 Johan Grobbelaar, 1 Gerhard Steenekamp.
Replacements: 16 Juann Else, 17 Alu Tshakweni, 18 Francois Klopper, 19 Nicolas Janse van Rensburg, 20 Nama Xaba, 21 Paul de Wet, 22 Stedman Gans, 23 Willie le Roux.
Ospreys: 15 Jack Walsh, 14 Dan Kasende, 13 Phil Cokanasiga, 12 Keiran Williams, 11 Keelan Giles, 10 Dan Edwards, 9 Reuben Morgan-Williams, 8 Morgan Morse, 7 Harri Deaves, 6 Ross Moriarty, 5 James Fender, 4 Rhys Davies, 3 Tom Botha, 2 Dewi Lake (captain), 1 Garyn Phillips.
Replacements: 16 Ethan Lewis, 17 Steffan Thomas, 18 Rhys Henry, 19 Huw Sutton, 20 James Ratti, 21 Luke Davies, 22 Tom Florence, 23 Harri Houston.
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Zebre: 15 Lorenzo Pani, 14 Mikro Belloni, 13 Giulio Bertaccini, 12 Damiano Mazza, 11 Simone Gesi, 10 Giacomo Da Re, 9 Alessandro Fusco, 8 Giovanni Licata (captain), 7 Bautista Stavile, 6 Davide Ruggeri, 5 Leonard Krumov, 4 Matteo Canali, 3 Juan Pitinari, 2 Tommaso Di Bartolomeo, 1 Muhamed Hasa.
Replacements: 16 Giampietro Ribaldi, 17 Paolo Buonfiglio, 18 Ion Neculai, 19 Alessandro Ortombina, 20 Guido Volpi, 21 Samuele Locatelli, 22 Thomas Dominguez, 23 Martin Farias.
Edinburgh: 15 Wes Goosen, 14 Harry Paterson, 13 Piers O’Conor, 12 James Lang, 11 Jack Brown, 10 Ben Healy, 9 Ben Vellacott, 8 Magnus Bradbury (captain), 7 Luke Crosbie, 6 Liam McConnell, 5 Grant Gilchrist, 4 Marshall Sykes, 3 Paul Hill, 2 Ewan Ashman, 1 James Whitcombe.
Replacements: 16 Paddy Harrison, 17 Pierre Schoeman, 18 D’arcy Rae, 19 Sam Skinner, 20 Hamish Watson, 21 Charlie Shiel, 22 Findlay Thomson, 23 Duhan van der Merwe.
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Scarlets: 15 Blair Murray, 14 Tom Rogers, 13 Joe Roberts, 12 Joe Hawkins, 11 Ellis Mee, 10 Sam Costelow, 9 Gareth Davies, 8 Taine Plumtree, 7 Josh Macleod (captain), 6 Tristan Davies, 5 Jake Ball, 4 Sam Lousi, 3 Henry Thomas, 2 Harry Thomas, 1 Kemsley Mathias.
Replacements: 16 Kirby Myhill, 17 Alec Hepburn, 18 Harri O’Connor, 19 Max Douglas, 20 Jarrod Taylor, 21 Dane Blacker, 22 Johnny Williams, 23 Macs Page.
Munster: 15 Mike Haley, 14 Shane Daly, 13 Dan Kelly, 12 Alex Nankivell, 11 Thaakir Abrahams, 10 JJ Hanrahan, 9 Craig Casey (captain), 8 Brian Gleeson, 7 Alex Kendellen, 6 Jack O’Donoghue, 5 Fineen Wycherley, 4 Jean Kleyn, 3 Oli Jager, 2 Niall Scannell, 1 Jeremy Loughman.
Replacements: 16 Lee Barron, 17 Josh Wycherley, 18 Conor Bartley, 19 Tom Ahern, 20 Gavin Coombes, 21 Paddy Patterson, 22 Jack Crowley, 23 Seán O’Brien.
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Cardiff: 15 Cam Winnett, 14 Josh Adams, 13 Harri Millard, 12 Ben Thomas, 11 Tom Bowen, 10 Callum Sheedy, 9 Johan Mulder, 8 Alun Lawrence, 7 Taine Basham, 6 Alex Mann, 5 Teddy Williams, 4 Josh McNally, 3 Javan Sebastian, 2 Liam Belcher (captain), 1 Rhys Barratt.
Replacements: 16 Evan Lloyd, 17 Danny Southworth, 18 Keiron Assiratti, 19 Ben Donnell, 20 Dan Thomas, 21 Aled Davies, 22 Ioan Lloyd, 23 Jacob Beetham.
Lions: 15 Quan Horn (captain), 14 Tapiwa Mafura, 13 Henco van Wyk, 12 Richard Kriel, 11 Angelo Davids, 10 Lubabalo Dobela, 9 Nico Steyn, 8 WJ Steenkamp, 7 Ruan Venter, 6 Jarod Cairns, 5 Ruan Delport, 4 Dylan Sjoblom, 3 Asenathi Ntlabakanye, 2 Franco Marais, 1 SJ Kotze.
Replacements: 16 Morné Brandon, 17 Heiko Pohlmann, 18 RF Schoeman, 19 Darrien Landsberg, 20 Renzo du Plessis, 21 Haashim Pead, 22 Sam Francis, 23 Rynhardt Jonker.
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Connacht: 15 Sean Naughton, 14 Chay Mullins, 13 Byron Ralston, 12 Cathal Forde, 11 Shayne Bolton, 10 Josh Ioane, 9 Caolin Blade, 8 Sean Jansen, 7 Shamus Hurley-Langton, 6 Paul Boyle (captain), 5 Josh Murphy, 4 Niall Murray, 3 Sam Illo, 2 Dylan Tierney-Martin, 1 Peter Dooley.
Replacements: 16 Dave Heffernan, 17 Jordan Duggan, 18 Fiachna Barrett, 19 David O’Connor, 20 Joe Joyce, 21 Ben Murphy, 22 Jack Carty, 23 Cian Prendergast.
Benetton: 15 Matt Gallagher, 14 Louis Lynagh, 13 Tommaso Menoncello, 12 Malakai Fekitoa, 11 Onisi Ratave, 10 Jacob Umaga, 9 Louis Werchon, 8 So’otala Fa’aso’o, 7 Michele Lamaro (captain), 6 Sebastian Negri, 5 Eli Snyman, 4 Niccolò Cannone, 3 Simone Ferrari, 2 Siua Maile, 1 Ivan Nemer.
Replacements: 16 Richie Asiata, 17 Mirco Spagnolo, 18 Tiziano Pasquali, 19 Riccardo Favretto, 20 Lorenzo Cannone, 21 Alessandro Garbisi, 22 Giuliano Avaca, 23 Paolo Odogwu.