Cardiff Blues winger Tom James faces a four month lay-off after suffering a partial shoulder dislocation during Wales's victory over USA.
Following a scan on his return to Wales, the Blues have confirmed the speedster's injury.
Speaking at the Vale of Glamorgan Training Centre, Tom James said, "We've had the results of the scan back and although I won't need an operation to repair the shoulder damage, I'm still not expected to be back on the rugby field for four months.
"It will be a case of working hard with the physiotherapist to try to strengthen the shoulder."
The news is a blow to the young winger who picked up the Cardiff Blues Most Promising Player of the Year Award in May.
"I will have a rest for three weeks now and return to pre season training with the Blues, where we will begin the treatment," added James who impressed with his power and pace in both Tests against Canada and USA.
"I enjoyed the tour of North America and was happy with my form. I was really pleased to have started both tests and scoring two tries was a bonus."
"It is frustrating that I picked up the injury as I felt I was playing well but hopefully I can get back sooner rather than later."
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.