Key Neath backrower Hywel Jenkins has been ruled out of his side's Celtic League final against Munster on February 1 at the Millennium Stadium.
Jenkins, a Wales A international, is likely to miss the remainder of the season after dislocating his shoulder in the quarter-final win at Pontypridd in late November.
He has now had his arm put in a sling and Neath's assistant coach Kevin George said: "Hywel has been unable to move his arm for six weeks because of the shoulder problem. He was as effective as anyone in the victory over Pontypridd and is one of the best ball-carriers in Welsh rugby."
With Jenkins also losing any chance of pressing for a Wales spot in the Six-Nations, Neath had to use
36-year-old former international Rowland Phillips, now their forwards coach, as a back-row replacement in last Saturday's Celtic League semi-final win over Cardiff.
As the countdown continues for RWC2015, Tournament Chief Executive Debbie Jevans visited the Millennium Stadium to discuss preparations for the eight matches and reveal the positive news that 100,000 tickets for games at the home of Welsh rugby have sold in the last seven days.
Jason Harries is targeting a first win on the World Series circuit this season with Wales. The series returns to action this weekend in Dubai where Harries is part of a team hoping to build from its efforts in round one in October.
Wales skipper Jevon Groves says his side have addressed a few points from Gold Coast and aim to 'hit the ground running' in the next two rounds of the World Series, kicking off with this weekend in Dubai before heading off to South Africa next week.
Wales Sevens manager Steff Thomas is hopeful his side can build from a quarter-final spot in the opening round of the World Series in Australia when his side take part in the forthcoming double header in Dubai and South Africa.