All Blacks legend Dan Carter is facing a race against time to be fit for Perpignan's crucial Heineken Cup clash with the Ospreys on Saturday.
The 26-year-old limped out of the French side's 40-14 home win over Bourgoin in the Top 14 at half-time after aggravating an old Achilles injury. He is now set to undergo further tests on the problem.
"The pain was getting worse after about half an hour of the match and as a precaution I came off at half-time," Carter told AFP.
"It was frustrating because I really wanted to play and the team had a really good match. I'll get tests on Monday and will decide with the staff if it would be better to take several days off from training."
The game against the Ospreys will be vital to both side's hopes of qualifying for the quarter-finals. The Ospreys, who beat Perpignan 15-9 at the Liberty Stadium in Round 2 before Carter had joined the club, are level at the top of the Pool 3 table on 15 points with Leicester Tigers, with the French side trailing in third with nine.
To stand any chance of qualifying for the last eight Perpignan must gain a bonus point victory from their final two games and hope other results go their way.
The Ospreys, who qualified for the quarter-finals for the first time last season, know they must take something from the game at Stade Aime Giral to set up a sixth round win-at-all-costs game with the Tigers in Swansea.
Perpignan's victory kept them in third place behind leaders Toulouse and Stade Francais in the Top 14. Meanwhile, the Ospreys lost top spot in the Magners League with a 25-21 home defeat at the hands of Munster on Friday night.
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.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series