Wales fullback Kevin Morgan has been ruled out of the team's autumn internationals.
The in-form Swansea No 15 was originally thought to be missing only four weeks with knee ligament damage, but the national side's medical staff have extended that to 6-8 weeks, putting him out of contention for the Tests against Romania, Fiji, Canada and New Zealand.
"We're obviously disappointed Kevin won't be taking part," said Wales coach Steve Hansen "We were looking forward to working with him in November.
"But as a coach, you have to accept that players are going to get injured. They are playing a contact sport, after all.
"The only thing we can do is be positive so Kevin can be positive about getting back on to the pitch as quickly as possible.
"We're looking at a few replacements," said Hansen, refusing to divulge names. Cardiff speedster Rhys Williams and Bridgend's Matt James are expected to figure highly in Hansen's thinking.
Both are in fine form for their clubs in the Celtic League and they face each other at the Arms Park on Saturday afternoon.
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.