As Rory McIlroy chases down a second Open Championship at St Andrews, we take a look at Rory's right-hand man, caddie Harry Diamond.
The Co Down man has been on Rory's bag since the end of 2017 and has helped him through some important challenges on the course, as well as a being a close friend off the course.
So who is Harry Diamond and how did he become McIlroy's caddie? Here are a few interesting facts about McIlroy's fellow Northern Ireland native.