Cearphilly travel to Swansea, Newport host Cardiff, Pontypridd entertain Glasgow and Bridgend take on Connacht in this Saturday's Celtic Leauge action.
SWANSEA v CAERPHILLY (2.30pm)
The All Whites have had started the season poorly, and anything less than a comfortable win will spell the end of their Celtic League hopes for this year.
If Caerphilly can repeat their five-try effort of last weekend, and shore up the holes in the backline, The Castletown men could travel back up the M4 with their first Celtic league win in eleven attempts.
Much will depend on Australian coach John Connolly's match tactics. Both Gibbs and the influential Colin Charvis are out, but good news for Swansea is that wingers Shaun Payne and Matthew Robinson are fit and in fine form.
The wide men will have their targets set on keeping up the average of 50 points that Caerphilly concede in Celtic League games.
Swansea: K Morgan; S Payne, M Taylor, S Gibbs (capt), J Vaughton; A Thomas, S Cordingley; D Morris, G Jenkins, B Evans, A Farley, J Griffiths, R Pugh, J Thomas, R Jenkins. Replacements: D Dorsey, C Balsham, D Thomas, J Slade, J Bater, R Jones, G Henson.
Caerphilly: (not yet available)
Referee: P Fear (Wales).
Out - Swansea: C Wells (knee), H Bennett (shoulder), S Gibbs (ankle), D Thomas (disciplinary), C Charvis
Caerphilly: T Taufahema (ankle), S Grainger (dislocated thumb), S Jarman.
Previous meetings: Swansea lead 8-0 on wins in Welsh league matches.
Last season:Swansea won 36-21 home and 38-3 away.
BRIDGEND v CONNACHT (2.30pm)
With four wins from four, Connacht require just one more victory to ease their way into the final eight of the Championship.
The Ravens could be the side to end Connacht's winning run. With Alan Lewis' men having lost their last two games, the backlash could start at the Brewery Field.
Lewis will have hammered home one message to his troops this week - discipline. Any team playing against veteran Ireland goal-kicker Eric Elwood has to behave to win.
Bridgend: A Carter; C Richards, D James, G Thomas (capt), R Mustoe; C Warlow, S Martens; C Loader, G Williams, C Horsman, D Jones, A Moore, M Molitika, N Budgett, C Harris. Replacements: H Harries, J Funnell, B Phillips, P Booth, J Thiel, R Bryan, R Jones.
Connacht: M McHugh; T Robinson, D Yapp, T Allnutt (capt), W Munn; E Elwood, C Keane; D McFarland, J Flannery, P Bracken, D Browne, R Frost, C Rigney, E
Peters, J O'Sullivan. Replacements: R McCormack, M Uijs, M Swift, P Neville, E Reddan, S Moore, J Norton.
Referee: tbc (England).
Out - Bridgend: S Taumalolo (knee), A Havili, A Joy (neck), S Mannix (thigh), P Jones, M James Connacht: W Waugh (bruised shoulder), J O'Connor (ankle), G Duffy, D O'Sullivan.
Previous Celtic League meetings: Nil.
PONTYPRIDD v GLASGOW (2.30pm)
Glasgow will have to survive a commando onslaught at Sardis Road to retain their unbeaten record.
New Zealand coach Kiwi Searancke has got the Glaswegians playing great rugby, but there are few tougher tasks in European rugby than travelling to Pontypridd. And make no mistake, this is the type of environment Searancke wants his players to perform in.
The home side are putting some terrific rugby together at present. Last week's nail-biting one-point victory over Borders showed the steel Lynn Howells has put into the team spreads from one to 22, and with confidence high, they will be hard to beat.
With Neil Jenkins in fine form, kicking 44 points in his past two matches, and Glasgow's Tommy Hayes the equal of any goal-kicker in Europe, error-free rugby will be stressed in the pre match talk by both coaches.
Pontypridd: (not yet available)
Glasgow: S Moffat; M Bartlett, A Bulloch, T Hayes, G Metcalfe; C Howarth, G Beveridge; D Hilton, B Daly, L Harrison, A Hall, J White, G Simpson, J Petrie, D Macfadyen. Replacements: G Bulloch, A Kelly, N Ross, A Wilson, A Nicol, A Henderson, R Kerr.
Referee: tbc (England).
Out - Pontypridd: S James (hamstring).
Glasgow: C Blades (foot), J Steel (foot), R Reid, B Irving.
Previous meetings: Pontypridd lead 4-2 on Welsh/Scottish League wins overall and by 3-0 at home. In the European Cup, Pontypridd lead 3-1 on wins.
Last season: Glasgow 59 Pontypridd 14; Pontypridd 25 Glasgow 20. Previous Celtic League meeting: Glasgow 59 Pontypridd 14 (31/8/01).
NEWPORT v CARDIFF (5.30pm)
Newport are playing for pride, respectability and their coaches' jobs. After a start to the season no one predicted, new coaches Leigh Jones and Richard Hill need to turn the Rodney Parade club's fortunes round and fast.
Newport are a far cry from the side that so nearly snatched the title from Llanelli last May, and it is time for the senior players in the squad to perform.
Defeat at home to deadly rivals Cardiff is sure to put the cat amongst the pigeons at Rodney Parade.
Cardiff are a side on an upward spiral and recent victories over Borders and Celtic League champions Leinster have given the Arms Park fans hope that this season will be better than the last.
Newport and Cardiff have played each other nearly 400 times since 1876, and tonight's clash offers the interesting match-up of Newport's powerful pack and weak backline against Cardiff's weak pack and exciting backline.
Newport: M Pini; M Mostyn, A Marinos, S Williams, L Nabaro; S Howarth, O Tonu'u; R Snow, J Richards, C Anthony, S Raiwalui (capt), M Voyle, J Forster, S Ojomoh, G Gravell. Replacements: to be named later.
Cardiff: R Williams; N Walne, J Robinson, P Muller, C Morgan; I Harris, R Smith; P Rogers, A Lewis, K Fourie, H Senekal, J Tait, R Appleyard, D Baugh, M Williams (capt). Replacements: G Powell, G Woods, A Jones, D McShane, R Powell, N Robinson, M Allen
Referee: D McHugh (Ireland).
Out - Newport: J Jones-Hughes (knee), J Pritchard (broken foot bone), B Breeze (knee), I Gough (back), J Strange (groin strain), S Ojomoh (flu), C Jones (fractured cheekbone), A Wagstaff (back), H Luscombe (achilles tendon), A Garvey (back), A Popham (knee), A Powell (shoulder and back).
Cardiff: E Lewis (hand), R Sowden-Taylor (knee ligaments), J Brownrigg
(shoulder), D Dewdney (back spasm), S John (neck), A Sullivan (groin).
Previous Celtic League meeting: Cardiff 20 Newport 14 (29/8/01).
Last season: Cardiff won 20-14 home and 17-14 away. They also won 20-14 at home in a Principality Cup quarter-final.
Welsh League meetings: Cardiff lead 14-5 with one draw overall and by 6-3 with one draw at Newport.
The clubs first met on the Newport Marshes in December 1876.Cardiff claim they lead with 191-139 wins, 58 draws, but Newport claim it is 191-143, 60 draws. Newport have lost all four Celtic League matches this season.
It was a double celebration for Wales and Ospreys scrum-half Rhys Webb when he called at the home of Welsh rugby to help commemorate the first anniversary of Principality Stadium and his return to fitness this weekend ahead of the RBS 6 Nations.
Prior to their departure to Wellington for the next leg of the World Series, Wales trained with England and Ireland. WRU TV caught up with Owen Jenkins who revealed the 'buzzword' which is driving the Wales squad on.
Wales head coach Rob Howley explains his decision to change the captaincy of the national side with Ospreys second row Alun Wyn Jones taking over from Sam Warburton for the forthcoming RBS 6 Nations. Howley is hoping his decision will allow Warburton to rediscover his 'mojo'.
How do you follow a dancing hippopotamus - the Ospreys wheelchair rugby team has just the 'oneness' to do it say the BBC! For a decade the sight of a herd of hippos synchronised swimming around their own private blue lagoon, has lit up our television screens at regular intervals between favourite BBC One shows. But now the nation's most watched channel has relinquished its famous amphibious mammals in favour of a new show-reel which includes the Ospreys wheelchair rugby team.
Head coach Rowland Phillips and key front rower Carys Phillips look ahead to games against Spain and Ireland as Wales Women ramp up their preparations for the forthcoming Six Nations. The two warm-up games are a 'massive opportunity to refine the squad' according to the Welsh camp.
Martyn Phillips has discussed details of the newly published 'Strategy for Welsh Rugby' which puts in black and white terms the plans and direction of the governing body of the national sport in Wales for the next decade.
WRU chief executive Martyn Phillips has urged Welsh rugby fans to follow in the footsteps of their soccer counterparts at last summer's Euro Championship by backing their team to the hilt in the upcoming RBS 6 Nations campaign.
Chief executive Martyn Phillips has highlighted the plans for Wales to become a breeding ground for national and elite club rugby coaches, which are contained in the WRU's 10-year 'Strategy for Welsh Rugby'.
Andrew Coombs is enjoying his new role as Nelson forwards coach. The former Dragons and Wales lock has big ambitions to become a professional coach but feels it's important to learn the ropes in grassroots rugby and where better than his home club Nelson, with friends and family close to hand.
Students at Brynllywarch Hall School, near Newtown, have transformed their own lives, and are now having a positive impact on others through rugby. The sport has had a life-changing effect on the well-being of the students who are now delivering rugby sessions to local primary schools and playing for a new mixed ability side
Wales reached their first semi-final since 2013 in the opening round of this season's HSBC World Rugby Sevens Series in Dubai. WRU TV's Graeme Gillespie recaps on what proved to be an eventful tournament
Wales and Ospreys back row James King, who came through the North Wales age grade system, nominated North Wales Regional Community Rugby Manager Marc Roberts, in the WRU's 'Diolch' initiative where squad players thanked those who played a part in their rise to the top.
Beating Merthyr has boosted Carmarthen Quins hopes of reaching a top eight spot in the Principality Premiership. Quins captain Haydn Pugh is delighted with his team's progress and is determined that everyone from the Under 6s through to the senior team, enjoys the ride.
When the Wales squad were asked to nominate individuals who played a big part in their early playing days, Wales and Dragons full back and wing Hallam Amos thought of his former Monmouth School rugby coach John Bevan.