However, following a subsequent inspection by match referee Peter Fitzgibbon and coaches Michael Bradley and Michael Cheika at 2pm, a decision was taken to call off the match.
The game will be refixed and tickets purchased for today's game will be valid for the refixed match.
Meanwhile, following a pitch inspection by the match Referee this afternoon, Ulster Rugby have confirmed that today's match against Munster will go ahead as scheduled at 6pm.
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