The action kicks off with Ulster, a point behind leaders Munster, facing The Ospreys at Ravenhill. The Ulstermen have won their last 11 games at home and have lost only once in the Celtic League this season, while The Ospreys have had a wretched start to their title defence. Form would suggest that should Munster slip up in Cardiff then Ulster could go top.
However that Munster trip to the Blues could see the Irish side maintain their fine early season start - but to do that they will need to break their duck at the Arms Park where they have lost four times in the past.
Also on Friday Connacht face the Glasgow Warriors with both sides struggling to find some form in the league. Although the Irish province achieved back to back wins in the European Challenge Cup they are looking to halt a run in the Celtic League which has seen them slip to six successive defeats, while the Warriors have not won any of their last five games.
Sunday's first game sees Leinster return to Donnybrook after two games at the RDS to face Edinburgh Gunners who, despite their high league position, have failed to click away from Murrayfield. A win will see the home side leapfrog the Gunners as both sit on 22 points in third and fourth place respectively.
The round ends with Border Reivers travelling to Newport-Gwent Dragons. Despite occupying fifth place, six points ahead of the Dragons, the Border's team has never won in Wales and the Dragons will be looking to kick start their campaign in what is remarkably only their second home game of the season in the Celtic League.
The Welsh Rugby Union has announced a major new sponsorship deal with Gullivers Sports Travel which will make the UK's leading, and longest established, multi-sport tour operator, an Official Supplier for the rest of the decade.
Having taken part in seven World Cups as a player and coach, Liza Burgess hopes to go out in style this afternoon when Wales take on Australia in the Play-off for seventh and eighth place in the Women's Rugby World Cup in Paris.
WRU Head of Rugby Josh Lewsey met with volunteers across the game earlier this week, championing their role in the sport. He was joined by Wales captain Sam Warburton for part of the day as volunteers took part in a 'Try Out' event for the 2015 Rugby World Cup
Wales Women may not have got the results they wanted recently on the field, but off it they have made massive strides in strength and conditioning - and that is in no small part due to S&C coach Sam Dodge.
Two weeks into the new pitch project at Millennium Stadium, Groundman Craig Campbell takes staff on a unique behind-the-scene tour of the works so far and National Squad Assistant Strength and Conditioning Coach John Ashby and Tour Guide Peter Owen describe what the revamp means for them.
Try-scorer Jenny Davies and fellow prop Megan York reveal to WRU TV's Graeme Gillespie their thoughts after Wales broke their drought in the Women's Rugby World Cup with a 35-3 win over South Africa in Paris.
Wales Women are expecting a tough battle against South Africa on Saturday as both teams seek their first pool win of the Rugby Women's World Cup. WRU TV's Graeme Gillespie talks to head coach Rhys Edwards and lock Jenny Hawkins.
Wales' Sam Warburton took a group of employees from Admiral on a behind the scenes tour of the Millennium Stadium and WRU TV tagged along to bring you a snippet of what it's like for the players on match day