article_snippet.sent: McIlroy was joined by Niall Horan at the Masters on Wednesday and the World's best golfer is set to return the favour by singing on stage with the One Direction star at the end of the summer.
article_snippet.sent: McIlroy is set to compete at the Deutsche Bank Championship which occurs a few days after One Direction play Gillette Stadium in Massachusetts on September 12 - and Niall Horan revealed that the pair will reunite on stage in Boston.
article_snippet.sent: Niall Horan caddied for McIlroy in the traditional Par-3 Contest at Augusta National .
article_snippet.sent: McIlroy steps aside to let Niall Horan Niall Horan tee off on the ninth hole at Augusta National .
article_snippet.sent: The Masters official Twitter account shared an image of McIlroy and Tiger Woods with Niall Horan . '
article_snippet.sent: Augusta National par-3 course traditionally hosts the Par-3 Contest the day before the first major of the year .
highlights_snippet.sent: Rory McIlory was joined on the course by Niall Horan for Par-3 Contest .
  
highlights_snippet.sent: McIlroy shot a one-under-par round to finish in a tie for 16th .