Blues prop Gethin Jenkins is set to make his 100th appearance for the region tomorrow when his side take on the Scarlets.
Blues head coach David Young has made two changes to the team that defeated Newcastle Falcons for the match against the Scarlets on Saturday.
Second row forward, Paul Tito, returns to the starting line up with Bradley Davies dropping down to the bench. In the front row, Gareth Williams starts at hooker with Rhys Thomas also moving down to the bench.
Gethin Jenkins makes his 100th appearance for the Blues having joined the region in the summer of the 2004.
The Blues travel to Parc y Scarlets boosted by two big away wins, having recorded a 33-24 win over Ulster at Ravenhill in the Magners League and 55-20 win over Newcastle Falcons in the north east of England in the Amlin Cup. Even more impressively the Blues have also won their last five away encounters.
They will be buoyed by the fact they have beaten Scarlets twice already this season, 19-15 at Cardiff City Stadium in the Magners League and 38-23 at Parc y Scarlets in the Anglo-Welsh Cup.
Blues talisman Martyn Williams reckons Cardiff Blues face their toughest game of the year when they take on Scarlets.
With Heineken Cup qualification on the line for both sides, Wales flanker Williams is braced for a fierce Welsh derby.
Williams said: "This will be the toughest game of the year for us because we don't have a great record at Llanelli and because of what is at stake for the Scarlets.
"They know they will be out of the running for qualification if they lose and that will really drive them on."
The Blues have won just one of their last seven games at the west Wales region but travel on the back of reaching the semi-finals of the Amlin Challenge Cup with an emphatic 55-20 demolition of Newcastle Falcons.
Williams said: "We are going into the game on a high after a good performance against Newcastle. We played some good rugby, albeit against a pretty poor defence. But we will build on that confidence for a tough game."
Scarlets Head Coach Nigel Davies has opted for a few changes to the team that started in Toulon and this week told his players to "stand up and be counted" after a disappointing display in the South of France.
British Lions and Wales international hooker Matthew Rees does not make the fitness race due to a minor neck injury, with Ken Owens starting for the Scarlets in the big derby.
Daniel Evans starts at full-back ahead of Rhys Priestland who is on the bench - the only change in the backs from last weekend's team. Rhys Thomas starts at tighthead prop with Deacon Manu on the bench. Tavis Knoyle gets the scrum-half jersey and Josh Turnbull comes in at flanker with Rob McCusker on the bench.
Davies said: "We lacked urgency last weekend and will be putting that right for this game, Cardiff are playing some good rugby - they are scoring tries and showing the quality they have in their squad.
"We know we are going to have to defend well, they have some big ball carriers, who get them over the advantage line and give them good go forward ball, some very useful backs and key strike players that we'll have to manage."
Blues 15 Ben Blair 14 Leigh Halfpenny 13 Casey Laulala 12 Jamie Roberts 11 Chris Czekaj 10 Ceri Sweeney 9 Richie Rees 8 Xavier Rush 7 Martyn Williams 6 Maama Molitika 5 Paul Tito (c) 4 Deiniol Jones 3 Taufa'au Filise 2 Gareth Williams 1 Gethin Jenkins
Replacements: 16 T Rhys Thomas 17 John Yapp 18 Bradley Davies 19 Sam Warburton 20 Lloyd Williams 21 Dai Flanagan 22 Dafydd Hewitt
Scarlets 15 Daniel Evans, 14 Sean Lamont, 13 Regan King, 12 Jonathan Davies 11 Andy Fenby, 10 Stephen Jones, 9 Tavis Knoyle, 1 Phil John, 2 Ken Owens, 3 Rhys Thomas, 4 Lou Reed, 5 Dominic Day, 6 Josh Turnbull, 7 Richie Pugh, 8 David Lyons (capt).
Replacements: 16 Deacon Manu, 17 Emyr Phillips, 18 Damian Welch 19 Rob McCusker, 20 Martin Roberts, 21 Rhys Priestland, 22 Lee Williams.
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