Blues High Performance Manager Gafyn Cooper has confirmed the Blues under 20 fixture against Dragons scheduled for 11th January at Jenner Park has been postponed.
"Unfortunately the game has to be cancelled as it clashes with a Wales U21 training session.
"We are victims of our own success as the training session means we effectively lose five front line players."
The game will be scheduled for a date likely to be in mid February. Confirmation will follow.