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.
Wales Under 18 captain Callum Bradbury is delighted to have seen his side claim a narrow 18-17 victory against a strong SA Schools 'A' side to end the three-match Under 19 International Series in South Africa on a high note.
The Wales U18 squad spent an emotional day in the drug-riddled townnship of Hout Bay. Hout Bay Warriors President Fred Johannes said the visit was 'the talk of the town' and will dream about the day everyday for the rest of his life.
RGC 1404's new head coach Mark Jones is hoping to build 'something special' in north Wales and is already looking forward to the development region participating in the Principality Premiership for the very first time.
A joint venture between the WRU and Admiral saw hundreds of children enjoy the Admiral Festival of Rugby held at the National Centre of Excellence at the weekend where Welsh internationals Sam Warburton, Scott Williams and Rob Evans were in attendance.
Wll Jones leads Wales U18s into battle this afternoon against Italy where the Welsh side will be seeking to bounce back from their narrow defeat to SA Schools in their opening clash of the U19 International Series
All four regions attended a successful training camp staged last weekend at the WRU National Centre of Excellence. It was a chance for new Wales Women's head coach Rowland Phillips to deliver his key messages to players and coaches as he prepares for the new season.
Wales U18 Team Manager Gethin Watts believes the next couple of weeks will be 'extremely beneficial' to the future of Welsh rugby as his side prepare to take part in the Under 19 International Series being staged in South Africa.
The WRU is searching for 12 new rugby development apprentices following a successful first year of its WRU Coach Core programme. Craig Duncan and Jess Hancock have flourished in the first year of the programme which has given them a real direction in their lives.
The WRU signed TV comedian Rhod Gilbert up to a 'Coaching Children Level 1' course before letting him loose on an U8s side at Whitland Junior Borderers - we went behind the scenes to film the making of 'Rhod Gilbert's Work Experience' see the results here.
Llandovery are aiming to make it three titles in a row in this year's Foster's National 7s being held at BT Sport Cardiff Arms Park on Sunday 28 August. Drovers assistant coach Simon Davies and Lee Rees assess their sides chances
A pioneering strength and conditioning programme has been delivered to more than 8000 boys and girls at hub schools throughout Wales this season, helping to develop stronger, more flexible athletes for rugby and other sports.
The Singha Premiership Rugby 7s Series returns to the BT Sport Cardiff Arms Park on July 22nd when all four Welsh regions go head to head. Scarlets skills coach Dai Flanagan and Blues Elite Performance Pathway Manager Richard Hodges along with current Welsh squad members were at the launch of this season's event