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Rory McIlroy’s Caddie Harry Diamond Is His Childhood Friend
TL;DR
Rory McIlroy's caddie, Harry Diamond, is his childhood friend, having known each other since they were seven years old. They grew up playing junior golf together at Holywood Golf Club in Northern Ireland.
Meet Rory McIlroy’s Caddie Harry DiamondHarry How - Getty Images
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At the Masters, Rory McIlroy is supported by his longtime caddie, Harry Diamond.
Diamond and McIlroy grew up together and they played junior golf at their home club Holywood, in Northern Ireland. “I’ve known Harry since I was seven years old,” McIlroy said after winning the Masters this year. “I met him on the putting green at Holywood Golf Club. We’ve had so many good times together. He’s been like a big brother to me the whole way through my life.”
He added, “To be able to share this with him after all the close calls that we’ve had, all the crap that he’s had to take from people that don’t know anything about the game – yeah, this one is just as much his as it is mine. He’s a massive part of what I do, and I couldn’t think of anyone better to share it with than him.”
McIlroy celebrates winning the Masters with Diamond.Harry How - Getty Images
Rory McIlroy’s caddie Harry Diamond is very private, so there’s not much available about him online. But here’s what we do know about Diamond:
He represented Ireland as a junior golfer.
Diamond was in the finals of the 2011 North of Ireland Championship, and won the West of Ireland Championship in 2012. That year, he also competed at the Irish Open.
McIlroy calls him a “big brother.”
Masters champion Rory McIlroy of Northern Ireland hands his putter to caddie Harry Diamond at the 2026 Masters.Augusta National - Getty Images
“I was an only child and Harry was a big brother. We’re very close. I love having him on the bag. I’m a different person. And I’m never going to give him shit even if something goes wrong. It would not be worth it,” the golfer said. They are very close; Diamond was McIlroy’s best man at his wedding to Erica Stoll in 2017.
Diamond has caddied for McIlroy since 2017.
Diamond at the 2025 Ryder Cup.Mike Egerton - PA Images - Getty Images
“To be honest, there is no caddie in the world that would be better for Rory than Harry Diamond,” golfer Shane Lowry said. “Harry is always there a day before Rory. He’s always walking the course and doing his work. And I see it, but these guys sitting there on their stupid podcasts don’t see it.”
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Q&A
How long have Rory McIlroy and Harry Diamond known each other?
Rory McIlroy and Harry Diamond have known each other since they were seven years old.
Where did Rory McIlroy and Harry Diamond play junior golf?
They played junior golf at Holywood Golf Club in Northern Ireland.
What role does Harry Diamond play in Rory McIlroy's career?
Harry Diamond serves as Rory McIlroy's caddie, supporting him during tournaments like the Masters.
