Cardiff Blues U18 have made two changes to their side to face Dragons U18 at Ystrad Mynach on Sunday afternoon, 2pm kick-off.
Immanuel Feyi-Waboso, who turned down a spot in the Wales U20 squad recently to focus on his studies, starts on the wing in place of Jake Thomas, while Ryan Wilkins starts at inside centre as Harrison James switches to fly-half and Jacob Symes drops to the bench.
There are other changes on the bench as Jack Locke covers hooker and Chad Powell covers scrum-half.
Cardiff come into the game after a comfortable 47-10 win over Scarlets at the Arms Park last week, while Dragons have beaten the West Wales side twice, 36-26 and 14-15.
Cardiff Blues U18: Cameron Winnett, Iwan Pyrs-Jones, Louie Hennessey-Booth, Ryan Wilkins, Immanuel Feyi-Waboso, Harris Jones, Zak Fifield; Rhys Barratt, Harri Williams, Owen Hethrel, Tom Caple, Tirion Bowen, Mackenzie Martin, Gwilym Evans (c), Sam Evans
Replacements: Jack Locke, Ioan Emmanuel, Kian Mattravers, Dylan Thomas, Kian Evans, Chad Powell, Jacob Symes, Ty Lewis, Sam Harris, Owen Williams