Leinster v Treviso – Friday 7:35pm
Leinster
Rob Kearney, Zane Kirchner, Garry Ringrose, Noel Reid, Fergus McFadden, Joey Carberry, Luke McGrath (c); Cian Healy, Bryan Byrne, Michael Bent, Ross Molony, Mike McCarthy, Dominic Ryan, Josh van der Flier, Dan Leavy
James Tracy, Andrew Porter, Mike Ross, Hayden Triggs, Jordi Murphy, Jamison Gibson-Park, Cathal Marsh, Rory O’Loughlin
Treviso
Jayden Hayward, Esposito, Benvenuti, Luke McClean, Buondonno, Tommy Allan, Bronzini; Nicola Quaglio, Ornel Gega, Simone Pietro Ferrari, Marco Fuser, Filo Paulo, Francesco Minto, Marco Lazzaroni, Alessandro Zanni
Roberto Santamaria, Alberto De Marchi, Tiziano Pasquali, Dean Budd, Marco Barbini, Edoardo Gori, Ian McKinley, David Odiete
Ulster v Newport Gwent Dragons – Friday 7:35pm
Ulster
Charles Piutau, Craig Gilroy, Stuart Olding, Stuart McCloskey, Jacob Stockdale, Brett Herron, Ruan Pienaar; Callum Black, Rob Herring, Ross Kane, Peter Browne, Franco van der Merwe, Clive Ross, Sean Reidy, Roger Wilson
John Andrew, Kyle McCall, Andrew Warwick, Alan O’Connor, Robbie Diack, Paul Marshall, Sam Windsor, Robert Lyttle
Newport Gwent Dragons
Carl Meyer, Adam Warren, Sam Beard, Jack Dixon, Pat Howard, Nick MacLeod, Sarel Pretorius; Sam Hobbs, Thomas Rhys Thomas, Craig Mitchell, Cory Hill, Rynard Landman, Ollie Griffiths, Nick Cudd, Ed Jackson
Rhys Buckley, Tom Davies, Lloyd Fairbrother, Nick Crosswell, Lewis Evans, Charlie Davies, Angus O’Brien, Tyler Morgan
Ospreys v Zebre – Friday 7:45
Ospreys
Dan Evans, Jeff Hassler, Ashley Beck, Josh Matavesi, Eli Walker, Sam Davies, Tom Habberfield (c); Nicky Smith, Sam Parry, Dmitri Arhip, Lloyd Ashley, Rory Thornton, Olly Cracknell, Justin Tipuric, Tyler Ardron
Hugh Gustafson, Paul James, Ma’afu Fia, Bradley Davies, Dan Baker, Rhys Webb, Ben John, Dafydd Howells
Zebre
Kurt Baker, Lloyd Greeff, Giulio Bisegni, Tommaso Castello, Gabriele Di Giulio, Edoardo Padovani, Guglielmo Palazzini; Andrea Lovotti, Tommaso D’Apice, Pietro Ceccarelli, Federico Ruzza, George Biagi, Jacopo Sarto, Maxime Mbanda, Andries van Schalkwyk
Carlo Festuccia, Andrea De Marchi, Dario Chistolini, Valerio Bernabo, Giovanni Pettinelli, Fabio Semenzato, Carlo Canna, Tommaso Boni
Scarlets v Munster – Saturday 3pm
Scarlets
Liam Williams, DTH van der Merwe, Scott Williams, Hadleigh Parkes, Steffan Evans, Rhys Patchell, Gareth Davies; Dylan Evans, Ken Owens (c), Werner Kruger, Jake Ball, Lewis Rawlins, Aaron Shingler, John Barclay, Josh McLeod
Ryan Elias, Wyn Jones, Peter Edwards, David Bulbring, Tadhg Beirne, Jonathan Evans, Dan Jones, Jonathan Davies
Munster
Simon Zebo, Darren Sweetnam, Dan Goggin, Rory Scannell, Ronan O’Mahony, Tyler Bleyendaal, Duncan Williams; James Cronin, Niall Scannell, John Ryan, Dave Foley, Billy Holland (c), Dave O’Callaghan, Tommy O’Donnell, Jack O’Donoghue
Kevin O’Byrne, David Kilcoyne, Brian Scott, Jean Kleyn, Donnacha Ryan, Tomas O’Leary, Ian Keatley, Cian Bohane
Connacht v Glasgow -Saturday 5:15pm
Connacht
Cian Kelleher, Niyi Adeolokun, Eoin Griffin, Bundee Aki, Matt Healy, Jack Carty, Caolin Blade; Denis Buckley, Tom McCartney, Finlay Bealham, Ultan Dillane, Danny Qualter, Eoin McKeon, Nepia Fox-Matamua, John Muldoon (c)
Dave Heffernan, Ronan Loughney, JP Cooney, Lewis Stevenson, James Connolly, Kieran Marmion, Shane O’Leary, Peter Robb
Glasgow
Stuart Hogg, Leonardo Sarto, Alex Dunbar, Sam Johnson, Tommy Seymour, Peter Horne, Henry Pyrgos (C); Gordon Reid, Pat McArthur, Zander Fagerson, Tim Swinson, Jonny Gray, Rob Harley, Simone Favaro, Ryan Wilson
Corey Flynn, Ryan Grant, Sia Fuafisi, Tjiuee Uanivi, Lewis Wynne, Ali Price, Rory Clegg, Sean Lamont
Cardiff Blues v Edinburgh – Saturday 7:35pm
Cardiff Blues
Dan Fish, Blaine Scully, Cory Allen, Rey Lee-Lo, Tom James, Steve Shingler, Tomos Williams; Rhys Gill, Kirby Myhill, Taufa’ao Filise, George Earle, Maccauley Cook, Josh Navidi, Ellis Jenkins(C), Nick Williams
Kristian Dacey, Gethin Jenkins, Scott Andrews, James Down, Cam Dolan, Lewis Jones, Gareth Anscombe, Matthew Morgan
Edinburgh
Glen Bryce, Rory Scholes, Sasa Tofilau, Solomani Rasolea, Tom Brown, Duncan Weir, Nathan Fowles; Rory Sutherland, Ross Ford, WP Nel, Fraser McKenzie, Grant Gilchrist, Jamie Ritchie, Hamish Watson, Nasi Manu
Stuart McInally, Jack Cosgrove, Simon Berghan, Ben Toolis, Magnus Bradbury, Sam Hidalgo Clyne, Blair Kinghorn, Chris Dean