James Hook is one of 15 players to be released from the Wales squad
Wales have released 15 players back to their regions and clubs ahead of their respective matches this weekend.
Eight players will head back to their Welsh regions with Josh Turnbull and Liam Williams returning to the Scarlets and Alun Wyn Jones and James King released back to the Ospreys.
The quartet of Scott Andrews, Lou Reed, Josh Navidi and Andries Pretorius return to the Blues.
As per IRB regulations, Paul James (Bath), Craig Mitchell (Exeter Chiefs) and Olly Kohn (Harlequins) have been released back to their clubs as have Gethin Jenkins (Toulon), Mike Phillips (Bayonne), Lee Byrne (Clermont Auvergne) and James Hook (Perpignan).
The players will return back to the Wales RBS 6 Nations squad on Monday, 18 February.
Coach Richard Hodges is hoping Wales U20 can put a disappointing campaign behind them when they tackle Japan tomorrow as they look to finish the U20 Championship strongly to secure a good seeding for next year's tournament.
Wales U20 coach Richard Hodges is targeting three wins from three games in the Under 20 Championship after suffering defeat to England on Saturday. However, as WRU TV's Liz Jones discovers, he is concerned about the threat Japan pose tomorrow.
Wales defence coach Shaun Edwards is looking for physical and mental toughness from the 47-man World Cup training squad which was revealed yesterday and he added he is looking forward to seeing which players are prepared to dig the deepest.
Wales Under 18 captain Calum Haggett has received a conditional offer to read Biomedical Science at St Anne's College, Oxford. WRU chairman Gareth Davies went to meet Calum and Coleg y Cymoedd Principal Judith Evans to wish him luck in his exams and pass on some of his personal experience.