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.
Season Ticket holders at Cardiff Blues are reminded that they gain FREE entry to the British & Irish Cup pool fixtures this season - starting with Saturday's home fixture against Nottingham Rugby at BT Sport Cardiff Arms Park (kick-off 2.30pm).
Teenage Cancer Trust will be collecting for valuable funds at BT Sport Cardiff Arms Park on Saturday afternoon ahead of our British & Irish Cup fixture with Nottingham Rugby (kick-off 2.30pm). Ahead of the game, we take a closer look at the charity and discover how they are making a difference...
Cardiff Blues suffered a first defeat of the season in the European Rugby Challenge Cup as a second half burst of tries from Harlequins saw the English side claim victory at BT Sport Cardiff Arms Park.