Leicester Tigers wing Rhys Williams has been named in the Wales squad for the Under-20 Six Nations.Williams made his senior debut in the LV= Cup last season and has played in the Premiership ‘A’ League this term.   England provide the opening opposition for Wales on Saturday, February 7. National Academy coaching manager Allan Lewis said: "We have a young and exciting group of boys with some experienced players from last season. "England will be a huge challenge, as double world champions, but one that we will relish and embrace.”   Wales Under-20 Six Nations squad: Forwards: Luke Garrett (Dragons), Harrison Walsh (Ospreys), Dillon Lewis (Blues), Alex Jeffries (Dragons), Joe Jones (Blues), Ryan Elias (Scarlets), Liam Belcher (Blues), Torin Myhill (Scarlets), Joe Davies (Dragons), Rory Thornton (Ospreys), Adam Beard (Ospreys), Seb Davies (Blues), Tom Phillips (Scarlets), Ollie Griffiths (Dragons), Harrison Keddie (Dragons), Jordan Viggers (Blues), Rory Bartle (Gloucester) Backs: Tom Williams (Blues), Kieran Hardy (Scarlets), Owen Davies (Dragons), Daniel Jones (Scarlets), Callum Sheedy (Bristol), Garyn Smith (Blues), Tyler Morgan (Dragons), Owen Watkin (Ospreys), Danny Cross (RGC), Barney Nightingale (Dragons), Joshua Adams (Scarlets), Rhys Williams (Leicester Tigers), Elis-Wyn Benham (Blues), James Whittingham (Blues), Dafydd Howells (Ospreys)