Looks like things got pretty heated when a fight broke out between Niall Horan and rugby player Mike Phillips after Niall called him out on Twitter.
Niall took to Twitter to rip on Mike during the Six Nations match over the weekend when the Welsh player got in a fight with the team's Irish opponents.
Niall tweeted: "Mike Philips is like a child throwing his toys out of the pram! His attitude is terrible, looks like a right arrogant idiot."
Mike's response? "@NiallOfficial come down to training in the next week big boy. Bring the rest of The Beatles with you."
Not to worry too much though, as Irish rugby player Rob Kearney tweeted: "@mikephilips009 don't worry @NiallOfficial – I've got your back!"
Meanwhile, Niall has been offered a shot at duking it out with Mike in the boxing ring--for charity, of course.
Something tells us Niall wouldn't be up for the fight.