Ulster hit back instantly from the restart with hooker, Neil Hanna latching on to the kick off and coming to within a yard of the try line before second row forward Paulo drove over in the corner to give Ulster A a 19-11 half time lead.
Half Time Blues A 11 Ulster A 19
With the rain starting to fall in the second half the game deteriorated somewhat with a lot of unforced errors and directionless kicking.
The Blues were keeping Ulster back in their own half but were failing to capitalise on their territory.
The breakthrough came when James Lockston made a great break down the left wing and flipped the ball inside for Jamie Murphy to score.
Sloppy defence by the Blues saw them driven all the way back to their own twenty two. However, Ulster were awarded a penalty that Humphreys converted and soon followed it with another to secure a 25-16 win to the visitors.
Full Time Blues A 16 Ulster A 25