The Blues went down 25-48 to the Dragons in the Celtic League, completing a black Saturday for the region and the Cardiff club after the Blue & Blacks had earlier lost 22-33 at home to Bedwas in the Premier Division.
Both teams had the benefit of early leads only to be overpowered in the second half. But the Blues salvaged something from their heavy defeat at Rodney Parade by scoring a fourth try in injury time to keep their Heineken Cup qualification target alive.
Blues' match report can be found under Fixtures & Results.
Cardiff Blues were crowned the Welsh champions of the Premiership Rugby 7s Series on Saturday night to book a place at the Series Final on Friday, August 8 - and you can join them with tickets on sale NOW!
In its sixth year the Blues Cup once again showed to be huge hit throughout the region and is a great advert for the community game as each of the six finalists across the three age groups produced rugby of an outstanding level resulting in 14 tries.
Inspired Cardiff Blues enjoyed Judgement Day at the Millennium Stadium as they secured a tense 17-13 win over regional rivals Scarlets in a feisty and enthralling encounter in the RaboDirect PRO12 on Easter Sunday.