We knew conditions might not have been the greatest when, earlier that day, Niall tweeted: "We are in! this is it! CROKE PARK ! Woohoo!! Hope the rain goes away, the stage is like an ice rink , slippy! As I just found out haha"
Liam was the unlucky one to hit the stage during "Best Song Ever" - and everyone's hero, Zayn, was quick to the rescue.
At least he was able to have a laugh about it, tweeting: "Well u gotta think on the bright side of these things least I get to watch myself on a fail compilation on YouTube"
He also Instagrammed a pic of the stage, writing: "Best place to fall over in the world"
Maybe they should rethink the stage design? Ramps and rainy conditions don't mix.
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Gallery | One Direction 'Where We Are' Tour Pics