2017 Under-20s Six Nations: Preview

The Under-20s Six Nations Championship offers a glimpse of the future as the Northern Hemisphere's most promising players showcase their talent and potential. Aron Hegarty looks previews the teams ahead of a star-spotting tournament. Since 2008, some of Europe's finest players – Wales' Sam Warburton, Scotland's Jonny Gray and Ireland's Garry Ringrose – have featured in this competition and gone on to bigger things. Names to watch out for at this year's Six Nations include England centre Jacob Umaga (nephew of New Zealand great Tana) and France prop Daniel Brennan (son of ex-Irish internat…