Say I Didn’t Warn Ya

Niall Horan took in Day 2 of the Barclays ATP World Tour Finals tennis held at the O2 Arena in London today, November 10. He watched his pal Novak Djokovic play against Marin Cilic of Croatia.

Niall took to his Twitter to celebrate his friend’s win saying, “Great to watch my brother @DjokerNole win at the O2 arena tonight ! What an athlete !”