Blues North and Blues South were both scheduled to be in action this week in the latest round of the WRU Championship.
Blues North defeated Newport Gwent Dragons at Cross Keys 21 -13 to stay clear at the top of the table.
Blues North Under 16s Team: Sean Nicholas, Dafydd Hicks, Tom Rees, Dean Gunter, Will Rose, Ian Smerdon, Caine Rees, Garrick Legge, Callum Williams, Aaron Atkins, Thomas Payne, Steven Owen, Ieuan Davies (c), Alex Pugsley, Richard Powell,
Replacements: Lloyd Peart, Mitchell Dummett, James Wood, Greg Morgan, Neil Wallage, Kristian Phillips, Harry Gravell
The Blues South fixture against Scarlets due to be played at the Arms Park was postponed.