New Cardiff coach Dai Young and his men return to their home ground keen to turn around the poor start they have made season. Defeats to Glasgow and Connacht, followed by a narrow win over Scottish minnows Borders, mean Cardiff are struggling to make the Celtic League quarter finals.
Defending champions Leinster travel to Cardiff without their Ireland internationals - including brilliant centre Brian O'Driscoll - and hard questions will be asked of Young and his men if they don't leave the Arms Park with a victory.
Young has rushed Cardiff's two new arrivals from Africa into the side. South African fullback Donavan van Vuuren replaces Rhys Williams and Namibian lock Heino Senekal steps in for the injured John Tait.
"They've both worked hard in training this week and we are taking the first opportunity to give them a game," Young said.
"I am also mindful that players such as Rhys Williams have been ever-present so far this season and need a break to recharge their batteries."
At Stradey Park, Welsh bookmakers Jack Brown have given Ebbw Vale a 24-point start against Llanelli, and they'll need them.
Llanelli have had a mixed start to the Celtic League with losses to Munster and Neath, but they should beat the rest of Pool A without too much trouble.
The Scarlets are missing No 8 Scott Quinnell (nose operation), but welcome back captain Leigh Davies from injury.
Llanelli coach Gareth Jenkins says his side have to win their next three games to reach the Celtic League quarter-finals.
"We have to win against Ebbw Vale, then Swansea at home and travel for a tough contest in Ulster," he said. "It's all about qualification and we need a result in all three to get back into contention.
"Leigh will provide a massive boost in midfield and I've seen enough positive things over the last few weeks to be confident things are coming together."
Davies replaces New Zealander Matt Cardey in the centre, with Gareth Bowen coming in at fly-half for Wales international Stephen Jones. Prop Iestyn Thomas is also rested, with Phil Jones stepping in.
At Virginia Park, Todd Blackadder's Edinburgh team should hold too many aces for Caerphilly. Edinburgh are enjoying a fruitful tournament and will be looking for a big win to cement their place in the top four of Pool A.
In contrast, Caerphilly are winless in a season and a half of Celtic League rugby, and last week's poor effort against a 14-man Ebbw Vale side indicates that's not about to change.
LLANELLI v EBBW VALE (at Stradey Park, 2.30pm).
Llanelli: G Evans, M Jones, M Watkins, L Davies (capt), S Finau; G Bowen, D Peel; P John, M Thomas, M Madden, V Cooper, L Gross, D Jones, I Boobyer, D Hodges. Replacements: I Thomas, R McBryde, C Wyatt, G Williams, M Phillips, S Jones, M Cardey.
Ebbw Vale: (not yet available)
Out - Llanelli: L Davies (knee), C Wyatt (shoulder), N Boobyer (stress fracture of foot).
Ebbw Vale: C Billen (back), D Penisini (knee), J Evans (cut head).
Previous Celtic League meeting: Llanelli 46 Ebbw Vale 16 18/8/01). Welsh/Scottish League wins: Llanelli 10-4 with two dra\wn.
Last season: Llanelli won 46-16 home and 16-3 away in the league and by 34-17 in a Principality Cup semi-final at the Millennium Stadium.
Previous Celtic League meeting: Llanelli 46 Ebbw Vale 16.
Form guide: Ebbw Vale have only won once at Stradey in a league match - 15-12 in 1997/98. In all meetings Llanelli lead 59-28 with nine drawn and one abandoned.
CAERPHILLY v EDINBURGH RUGBY (at Virginia Park, 2.30pm).
Caerphilly: O Ashman; G Lewis, S Cox, J Murphy, R Howells; L Richards, S Tuipulotu; L Manning, C Ferris (capt), R Skuse, M Workman, N Rouse, J El-Abd, A Williams, G Jones. Replacements: A Chilten, F McLoughlin, R Boobyer, F Vunipola, D Sweet, N Watkins, R Bilton.
Edinburgh: B Laney; D Lee, C Joiner, A Dickson, C Paterson; D Hodge, M Blair; A Jacobsen, D Hall, C Smith, N Hines, S Murray, T Blackadder (capt), S Taylor, M Leslie. Replacements: A Kelly, J Brannigan, A Kellock, A Dall, M McMillan, T Philip, S Webster.
Out - Caerphilly: T Taufahema (ankle), S Jarman.
Previous Celtic League meeting: Edinburgh 27 Caerphilly 20 (7/9/01). Welsh/Scottish League wins: Edinburgh 6-0, three at home and three away.
Last season: Edinburgh 27 Caerphilly 20; Caerphilly 21 Edinburgh 35.
Form guide: Caerphilly have beaten Glasgow at home, but never defeated Edinburgh.
CARDIFF v LEINSTER LIONS (at the Arms Park, 5.30pm).
Cardiff: D van Vuuren; N Walne, J Robinson, P Muller, A Sullivan; I Harris, R Powell; T Payne, G Woods, G Powell, H Senekal, A Jones, R Appleyard, D Baugh, M Williams (capt). Replacements: K Fourie, A Lewis, L Tait, D McShane, R Smith, N Robinson, R Williams.
Leinster: C Warner; K Lewis, S Horgan, D Quinlan, G D'Arcy; A Dunne, B O'Meara; E Byrne, P Smyth (capt), N Treston, B Gissing, A Kearney, E Miller/A McCullen, D Dillon, L Toland. Replacements: P Coyle, G Hickie, A McCullen/S Jennings, N Breslin, B Willis, M Leek, Journalist McWeeney.
Referee: Iain Ramage (Scotland).
Out - Cardiff: E Lewis (sternum), R Sowden-Taylor (knee ligaments), J Brownrigg (shoulder), D Dewdney (back spasm), S John (neck), J Tait (back), A Lewis (hip), P Rogers (back), C Morgan (rested).
Leinster: N Spooner, V Costello, P McKenna, A Magno.
Previous meeting: Cardiff won away by 23-14 in a semi-final of the 1995/96 European Cup.
Form guide: Cardiff hope to make amends for losing at home to Glasgow, while Leinster come as reigning champions.
British and Irish Lions captain Sam Warburton is looking forward to bringing together players from Ireland, Scotland, England and Wales for the biggest challenge of their careers - a series against world champions, New Zealand.
For the fifth year running, Wales referee Nigel Owens will be in charge of proceedings at Judgement Day V at Principality Stadium. It promises to be 'extra special' for the Wales' favourite ref, as he will be making his 150th appearance in the league.
There will be no shortage of inside knowledge from Bowl Finalists Caerphilly and Amman United when they face each other on Sunday at National Finals Day. Caerphilly hooker Rhys Cleverly knows the Principality Stadium pitch better than most as a matchday groundsman, while Amman United can look to Wales' record try scorer Shane Williams for some helpful advice.
Two hundred and 40 teams competed in the inaugural Urdd WRU 7s held at Pencoed last week with Welsh internationals Steff Andrews and Jasmine Joyce impressed with the talent on display, as was Urdd chief executive, Sioned Hughes.
The countdown is on for Judgement Day V as tickets for the big day at Principality Stadium soar through the 50,000 mark. Players and coaches alike are bursting at the seams to play in the double header with Dragons coach Kingsley Jones claiming there is a 'real buzz' about the event.
WRU TV went behind the scenes when the four regions got together to test their skill set for the BBC's Scrum V Live rugby show, at the WRU National Centre of Excellene in the build up to Judgement Day V. Blues' Matthew Morgan was one of the stars of the show while the Dragons' Cory Hill proved a surprise package...the full set of results will be revealed on tv screens on matchday
Wales assistant coach Richie Pugh is confident his side can cause a few headaches in the Hong Kong Sevens this weekend. In a tough group, Wales kick off their campaign against New Zealand on Friday before playing Japan and Fiji, who are chasing their third consecutive Hong Kong title, on Saturday.
Bedwas had to overcome a stubborn Carmarthen Quins side before winning the Foster's Challenge Cup final in Bridgend with a 23-18 victory. Bedwas captain Nicky Griffiths pays tribute to his side who have claimed the club's first piece of silverware in the modern era.
Team coach Brett Davey is aiming to keep his unbeaten run in cup finals at Principality Stadium intact when his side take on Amman United in the WRU Bowl final, after he guided Caerphilly to a 20-14 win against Cilfynydd in the semi-finals.
Penallta are hoping to go one step further than last season when falling to Bedlinog in the WRU Plate Final. After a titanic struggle against Nant Conwy, they have given themselves a great chance, after a hard fought 18-13 semi-final victory.
The unique jeopardy of Judgement Day V has been described by stars from Cardiff Blues, Ospreys, Scarlets and Newport Gwent Dragons who will face each other in the annual double-header at Principality Stadium on 15th April.