Speaking ahead of the match, Blues Performance Manager, Richard Hodges, said,
"Having the under 16's reaching the final is a great testament to the hard work everyone has put in and shows how well they are coming through.
"Eleven of the boys starting on Wednesday are in the Wales squad.
"It's great having so many players involved at the national level and shows that the structure is working within the region. They will go to Wellington in England to play in an international tournament at Easter, which is something we are all looking forward to."
15 Will Brinkley 14 Josh Rodgers 13 Jessie Lipetz Robic 12 Nick Griffiths 11 James Walsh 10 Luke Fish 9 Liam Free
8 Joe Gaughan 7 Sid Blackmore (c) 6 Dan Holder 5 Tom Hayward 4 Cengizhan Ziyaeddin 3 Joel Ringer 2 Aldi Coverdale 1 Sam Brinkworth
16 Will Haines 17 Theo Warren 18 Matt Holder 19 Aaron Bowman 20 Cameron James 21 Myles Churcher 22 Alex Guard 23 Tristan Notley
Under 16 Final
Scarlets v Blues South
Wednesday 20 February 7.30pm St Helens, Swansea RFC