Meanwhile the final will be played out between the Ospreys and holders Scarlets at Stradey Park on Saturday afternoon 12pm kick off. The U16 final between the Ospreys and Dragons takes place at Rodney Parade, Newport RFC on Sunday, kick off 2pm.
U20 Bluesv Dragons: K Baller; G Jones, M Maclean, M Edwards, N Gill or Chris Clayton or Kevin James; C Ashton, L Scarf; S Thomas, A Fowler (capt), C Maynard, J Connors, S Whadan, A Taylor, E Hampson, C Dacey or D Thorne. Replacements: G Williams-Davies, Tom Isaacs,H Ibrahim. R Blumberg, C Umbleja, J Bull, C John
U16 Dragons v Ospreys: I Coombes; N Preece, J Woods, A Hughes, J Spear; D Ellis, D Jones; A Coundley, R Price, S Maguire, M Allen, L Bray, R Jenkins, E Cracknell, C Filier (capt)