The following Friday (17 February) the Blues welcome an in form Ulster side to the Cardiff City Stadium, 7.05pm kick off.
Both teams are level on 31 points in the table only four points adrift of the play off places. However, the Blues have a game in hand on their nearest competitors due to the postponement of the match against Dragons.
The Blues have had mixed fortunes against these two Irish teams, notching up a win against Connacht in October but suffering a loss to Ulster in September.
Tickets for both matches will be available on www.cardiffblues.com/tickets