Following his try-scoring exploits against England on Saturday, Cardiff Blues age grade utility back, Mason Grady, is one of four Wales under-18 players to retain their starting spots for Wednesday's clash against Scotland.
Chris Horsman's side kicked off their campaign with a 38-20 defeat to Jim Mallinder's England at Hartpury over the weekend, but Grady, who moves to the wing, registered on the scoresheet through a sensational individual try at the death.
Also retaining their starting places are Harri Deaves, Ben Carter and Cardiff-born Ioan Lloyd, who is a member of the Bristol Bears and Clifton College set-up.
A total of seven Cardiff Blues age grade stars will feature at Worcester Warriors' Sixways Stadium, with Ioan Evans and Alex Mann called into the starting line-up to take their place at outside centre and blindside flanker respectively.
Iestyn Haskins, Rhys Anstey, Ethan Lloyd and Ethan Fackrell, who started in the clash against England, are named on the 10-man bench.
Former Cardiff Blues age grade wing, Louis Rees-Zammit, who became Gloucester's youngest Premiership player over the weekend, will make his first appearance of the festival.
Wales under-18: Dan John (Exiles); Mason Grady (Cardiff Blues), Ioan Evans (Cardiff Blues), Tom Mathews (Exiles), Louis Rees-Zammit (Gloucester); Ioan Lloyd (Bristol), Dylan Davies (Dragons); Theo Bevacqua (Exiles), Rhodri King (Scarlets) Lewys Jones (Ospreys), Ben Carter (Dragons, capt.), James Fender (Ospreys), Alex Mann (Cardiff Blues), Harri Deaves (Ospreys), Carwyn Tuipulotu (Scarlets)
Replacements: Oliver Burrows (Ospreys), Sam O Connor (Scarlets), Iestyn Haskins (Cardiff Blues), Rhys Anstey (Cardiff Blues), Harry Breeze (Scarlets), Bradley Roderick (Ospreys), Ethan Lloyd (Cardiff Blues), Ed Dunford (Exiles), Ethan Fackrell (Cardiff Blues), Morgan Richards (Dragons)