Wales captain Scott Quinnell will face the Welsh All Blacks and then miss the next two Celtic League matches, at home to Ebbw Vale and away in Edinburgh, after opting for surgery on his troublesome nose.
The big No 8 has suffered from regular nose-bleeds since he took a knock on his hooter during the British Lions tour of Australia.
He will be out for two weeks, but the Scarlets have Dave Hodges back after his duties for the United States team.
Coach Gareth Jenkins said: "It is a great blow to the side to lose someone of the calibre of Scott, but we have a strong squad to choose from and it is best to get the problem sorted sooner rather than later."
Nearly 40 players were involved in the first Wales Under 18 training session of the season. WRU National Performance Manager Gethin Watts is excited at the potential shown by the group and expects the Regional Under 18 Championship to hone their skills even further.
The WRU officially unveiled the new pitch today in time for Wales to take on Australia in the first of the Dove Men Series autumn international matches this Saturday. Head Groundsman Lee Evans and colleague Craig Campbell reflect on the 15-week project and look ahead to a pitch perfect future at Millennium Stadium.