The fourth round of the United Rugby Championship takes place this weekend. Find out all you need to know here.


TV

The Ulster v Lions and Munster v Connacht games are live on RTÉ2 and RTÉ Player, while Leinster v Scarlets is live on TG4.

RADIO

Munster v Connacht is live on Saturday Sport on RTÉ Radio 1.

ONLINE

RTE.ie/sport will have live blogs across the weekend with match reports and reaction from the grounds. All games are live on URC TV.

WEATHER

Dublin and Limerick are set to be cloudy with a couple of showers in the afternoon, 15-16C.

Leinster have a fearsome record against Welsh opponents, suffering just one defeat to any of the four regions since September 2018 – a 24-19 loss to the Ospreys in Dublin in March.

The Scarlets will be looking to bounce back from a below-par showing against Munster in Round 3 but their most recent away win was a 27-25 victory in Edinburgh at the end of February.

Their last three victories against Irish provinces have all been at Connacht's expense while they have won just twice at the RDS in 15 visits in all competitions.

Leinster, who welcome back Lions Tadhg Furlong and Jack Conan, were 52-25 victors when these sides met in Llanelli in January.

Argentina international Tomas Lezana is set for his Scarlets debut.

Second row Sam Lousi returns from knee injury, while British & Irish Lions prop Wyn Jones is in the starting XV.


Leinster: Hugo Keenan; Jordan Larmour, Garry Ringrose, Ciarán Frawley, James Lowe; Johnny Sexton (capt), Jamison Gibson-Park; Andrew Porter, Rónan Kelleher, Tadhg Furlong; Ross Molony, James Ryan; Caelan Doris, Josh van der Flier, Jack Conan.

Replacements: Dan Sheehan, Cian Healy, Michael Ala'alatoa, Ryan Baird, Rhys Ruddock, Luke McGrath, Ross Byrne, Jimmy O'Brien.

Scarlets: Ioan Nicholas; Johnny McNicholl, Jonathan Davies (capt), Johnny Williams, Ryan Conbeer; Sam Costelow, Gareth Davies; Wyn Jones, Ken Owens, WillGriff John; Sam Lousi, Lloyd Ashley; Aaron Shingler, Tomas Lezana, Blade Thomson

Replacements: Ryan Elias, Rob Evans, Samson Lee, Morgan Jones, Shaun Evans, Kieran Hardy, Dan Jones, Tom Rogers.

Referee: Marius van der Westhuizen (SARU, 5th league game)

The first interprovincial clash of the season sees in-form Munster take on inconsistent Connacht.

Munster have a maximum haul of 15 points from their opening three matches while the Westerners' big win against the Bulls is sandwiched by defeats to Cardiff and the Dragons.

Connacht were 24-20 winners when they visited Thomond Park in the Rainbow Cup in May and Munster’s record against Irish opposition since the start of 2020 is won five, lost seven.

But Connacht have not won successive matches against Munster since 2016 and they have never won consecutive away ties in the fixture.

Captain Peter O'Mahony will make his 150th appearance for Munster.

Connacht make five changes from last week's clash against Dragons with Lions centre Bundee Aki to make first start for Connacht this year.


Munster: Mike Haley; Andrew Conway, Keith Earls, Rory Scannell, Simon Zebo; Joey Carbery, Craig Casey; Dave Kilcoyne, Niall Scannell, John Ryan; Jean Kleyn, Tadhg Beirne; Peter O'Mahony (C), Chris Cloete, Gavin Coombes.

Replacements: Diarmuid Barron, Jeremy Loughman, Stephen Archer, Fineen Wycherley, Jack O'Donoghue, Neil Cronin, Jake Flannery, Dan Goggin.

Connacht: Tiernan O'Halloran; John Porch, Sammy Arnold, Bundee Aki, Mack Hansen; Jack Carty (capt), Caolin Blade; Matthew Burke, Dave Heffernan, Finlay Bealham; Niall Murray, Ultan Dillane; Cian Prendergast, Conor Oliver, Paul Boyle.

Replacements: Shane Delahunt, Greg McGrath, Jack Aungier, Eoghan Masterson, Abraham Papali’i, Kieran Marmion, Jarrad Butler, Tom Daly.

Referee: Chris Busby (IRFU, 12th league game)

Ulster are – alongside Munster – one of only two teams boasting a perfect haul of 15 points from their three matches so far.

Last week Nathan Doak starred in a bonus-point win over Benetton.

Dan McFarland's men have won their last four matches in total since losing a Rainbow Cup fixture to Leinster at the RDS Arena in May.

Ulster have played nine previous matches against South African opponents in the championship, winning seven, drawing one and losing another.

The Emirates Lions have won only two matches across the Rainbow Cup and URC and have been beaten by the Scarlets and Glasgow Warriors since opening their campaign with a win at Zebre.

Ulster have named an unchanged starting XV.

Reinhard Nothnagel and Sibusiso Sangweni earn their first start in the URC for the Lions


Ulster: Will Addison; Craig Gilroy, James Hume, Stewart Moore, Ethan McIlroy; Billy Burns, Nathan Doak; Andrew Warwick, Rob Herring, Tom O'Toole; Alan O'Connor, Sam Carter (capt); Matty Rea, Nick Timoney, David McCann.

Replacements: Brad Roberts, Eric O'Sullivan, Ross Kane, Kieran Treadwell, Sean Reidy, David Shanahan, Mike Lowry, Ben Moxham.

Lions: Divan Roussouw; Stean Pienaar, Manuel Rass, Megiel Burger Odendaal (capt), Sibahle Maxwane ;EW Viljoen, Andre Warner; Sti Sithole, Gerrit Visagie, Carlu Sadie ;Ruben Schoeman, Reinhard Nothnagel; Sibusiso Sangweni, Vincent Tshituka, Ruhan Straeuli

Replacements: Pieter Jacobus Botha, Ruan Dreyer, Asenathi Ntlabakanye, Wilhelm van der Sluys, Emmanuel Tshituka, Morne van den Berg, Frederik Zeilinga, Wandisile Simelane.

Referee: Mike Adamson (SRU, 56th league game)

<esi:include src="<p data-embed="rte-sport-results" data-id="https://www.rte.ie/sport/results/widgets/match/3713838/?amp;report=false&matches=1" data-matches="1"><iframe allowfullscreen="true" frameborder="0" height="85" src="https://www.rte.ie/sport/results/widgets/match/3713838/?iframe=true&report=false&matches=1" width="640"></iframe></p><p>Ulster are – alongside Munster – one of only two teams boasting a perfect haul of 15 points from their three matches so far.</p><p>Last week Nathan Doak starred in a <a data-cke-saved-href="//www.rte.ie/sport/united-rugby-championship/2021/1008/1252570-ulster-28-8-benetton/" href="//www.rte.ie/sport/united-rugby-championship/2021/1008/1252570-ulster-28-8-benetton/" target="_blank">bonus-point win over Benetton</a>.</p><p>Dan McFarland's men have won their last four matches in total since losing a Rainbow Cup fixture to Leinster at the RDS Arena in May.</p><p>Ulster have played nine previous matches against South African opponents in the championship, winning seven, drawing one and losing another.</p><p>The Emirates Lions have won only two matches across the Rainbow Cup and URC and have been beaten by the Scarlets and Glasgow Warriors since opening their campaign with a win at Zebre.</p><p>Ulster have named an unchanged starting XV.</p><p>Reinhard Nothnagel and Sibusiso Sangweni earn their first start in the URC for the Lions</p><hr><p><b>Ulster: </b>Will Addison; Craig Gilroy, James Hume, Stewart Moore, Ethan McIlroy; Billy Burns, Nathan Doak; Andrew Warwick, Rob Herring, Tom O'Toole; Alan O'Connor, Sam Carter (capt); Matty Rea, Nick Timoney, David McCann.</p><p><b>Replacements: </b>Brad Roberts, Eric O'Sullivan, Ross Kane, Kieran Treadwell, Sean Reidy, David Shanahan, Mike Lowry, Ben Moxham.</p><p><b>Lions:</b> Divan Roussouw; Stean Pienaar, Manuel Rass, Megiel Burger Odendaal (capt), Sibahle Maxwane ;EW Viljoen, Andre Warner; Sti Sithole, Gerrit Visagie, Carlu Sadie ;Ruben Schoeman, Reinhard Nothnagel; Sibusiso Sangweni, Vincent Tshituka, Ruhan Straeuli</p><p><b>Replacements: </b>Pieter Jacobus Botha, Ruan Dreyer, Asenathi Ntlabakanye, Wilhelm van der Sluys, Emmanuel Tshituka, Morne van den Berg, Frederik Zeilinga, Wandisile Simelane.</p><p><b>Referee: </b>Mike Adamson (SRU, 56th league game)</p>" />

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Follow Munster v Connacht (Saturday 7.35pm) via our live blog on RTÉ.ie/sport or the RTÉ News app, or watch live on RTÉ2 and RTÉ Player. Watch Ulster v Lions (Friday 7.35pm) on RTÉ2 and RTÉ Player.