A second half try by Jamie Robinson and five points from the boot of Iestyn Harris were not enough to save the Blues as they went down 31-10 to Munster at Musgrave Park in Cork.
To complete the Blues' woes Tom Shanklin was yellow-carded in a first half when they felt the full force of referee Iain Ramage's whistle and, after the break, replacement hooker Andrew Lewis was carried off with what appeared to be a leg injury.
Judgement Day is back at the Millennium Stadium for 2015 with the Welsh Rugby Union (WRU) and Regions confirming today that tickets will cost just £10 per head to see all four of Wales' GUINNESS PRO12 sides in action under one roof.
Battling Cardiff Blues produce a performance of full pride and heart in adversity as they lost out to reigning champions Leinster Rugby in a pulsating Guinness PRO12 encounter at BT Sport Cardiff Arms Park.
Cory Allen scored the only try of the game as Cardiff Blues edged an absorbing and dramatic Welsh derby with Newport Gwent Dragons at Rodney Parade to open 2015 in the Guinness PRO12 with a crucial victory.