Rory McIlroy says he’ll sing on stage with One Direction as a favour to Niall Horan

What could possibly go wrong?

It appears best friends for life, Rory McIlroy and One Direction singer Niall Horan, are participating in some kind of career swap. Last week Horan caddied for the golfer at the par 3 tournament prior to the Masters, and now McIlroy has revealed he'll be joining the singer and his band mates on stage in a couple of months. No, really. 'The deal was if I made him hit a shot here...they're playing in Boston at the end of the summer when I'm there and I'm going to have to get up on stage,' McIlroy said. 'I'll have to maybe sing a few lines so I'm not looking forward to that'. Why Rory? Sure it'll be grand, look at how smoothly Horan made the transfer to being a caddy, he didn't embaras...Oh. Best of luck with that. https://twitter.com/AlanMetcalfe/status/585904315317018625 https://twitter.com/NiallOfficial/status/585927702026289153 H/T CBS Sports.