Cardiff Blues could be without influential back row forward Maama Molitika for the whole of their Pool 5 Heineken Cup campaign.
The Tongan international damaged his pectoral muscle in the recent win over the Scarlets and is expected to be out of action for up to four months. The injury means the Blues could kick-off their European season without a complete back row unit.
Already ruled out until December is Wales and British & Irish Lions flanker Martyn Williams, who underwent shoulder surgery after returning from South Africa this summer, while No 8 Xavier Rush is struggling with a dislocated finger. Rush was another injury victim in the win over the Scarlets.
The Blues launch their Heineken Cup season with a home game against the Harlequins next week and then have to travel to Sale Sharks in Round 2. They then face Toulouse in back to back matches in December.
Blues coach Dai Young, who led his side to the semi-finals last season, is also sweating on the availability of Lions centre Jamie Roberts for the game against the Quins. He suffered a soft tisssue injury to his neck in the game against the Scarlets and has been sidelined for 7-10 days.
On the positive side, Young looks set to have Wales wing Tom James back in harness in time for the big Euro kick-off. James, who scored the dramatic try in the semi-final at the Millennium Stadium last season that took the game against Leicester Tigers into extra-time and then penalties, underwent surgery during the summer.
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.