Harry Diamond Net Worth, Family, and Career Journey in 2025

Harry Diamond has become a familiar name in the world of golf, largely due to his long-standing partnership with one of the sport’s biggest stars, Rory McIlroy. As McIlroy’s caddy, Harry has been at his side for numerous victories, but his journey to the professional golf scene is rooted in a deep friendship with McIlroy that dates back to their childhood. Despite being largely in the shadow of McIlroy’s fame, Harry Diamond has played a pivotal role in the golfer’s career. But who exactly is Harry Diamond, and what do we know about his personal life, career, and the work he does alongside one of the sport’s greatest players?

Harry Diamond’s Early Life and Friendship with Rory McIlroy

Born in Belfast, Northern Ireland, Harry Diamond shares a special bond with Rory McIlroy that spans decades. Both grew up in the same town of Holywood, where they met at a young age while playing junior golf at their local club, the Holywood Golf Club. The two quickly became childhood friends, forming a close-knit relationship based on their shared love for the game of golf.

Harry, like Rory, was a talented amateur golfer. However, unlike McIlroy, Harry never transitioned to the professional ranks. He had success as an amateur player, but his journey in golf would eventually take a different path—one that saw him trade his clubs for a caddy bag.

Before embarking on his career as a caddy, Harry worked at his family’s business. His deep roots in Northern Ireland, combined with a passion for golf, laid the foundation for his eventual role as McIlroy’s full-time caddy. It wasn’t until 2017, when McIlroy parted ways with his long-time caddy JP Fitzgerald, that Harry Diamond officially took on the role of being McIlroy’s trusted caddy. Since then, Harry has been by Rory’s side through thick and thin, including all of his 26 professional wins to date.

Harry Diamond’s Role as Rory McIlroy’s Caddy

As McIlroy’s caddy, Harry Diamond’s job goes far beyond simply carrying Rory’s golf bag. A caddy is an essential part of a golfer’s team, offering not just physical support, but also strategic advice during crucial moments in tournaments. Harry Diamond is responsible for advising Rory on key decisions, such as yardages, wind direction, club selection, and putt reads. These decisions are vital in shaping Rory’s performance on the course.

Though Harry has been criticized at times for not being as vocal or demonstrative as some other caddies, Rory McIlroy has consistently defended his friend and caddy, praising his ability to provide calm and thoughtful advice. In fact, McIlroy has publicly stated that he wouldn’t have Harry on the bag if he didn’t believe in his abilities.

“I wouldn’t have him on the bag if I didn’t think he was good at what he did,” McIlroy told BBC Sport. He continued, emphasizing their strong working relationship: “I love having him on the bag. I’m a different person. And I’m never going to give him s— even if something goes wrong. It would not be worth it.”

Rory’s support for Harry became even more apparent after a challenging year in 2024. McIlroy won his sixth Race to Dubai title, and during his victory speech, he acknowledged the unfair criticism Harry had received over the years, calling it “unwarranted.” He added, “Harry is an amazing caddie and the best friend I could ever ask for.”

Harry Diamond’s Personal Life: Family and Relationships

While Harry Diamond has largely kept his personal life out of the public eye, there are a few notable details that have emerged over the years.

Harry was previously engaged to Katie Larmour, a Northern Irish designer. Their engagement in 2013, following a five-year relationship, drew parallels to Rory McIlroy’s own romantic life at the time. However, in a twist of fate, both Harry and Rory called off their engagements in 2014—Rory with Caroline Wozniacki and Harry with Katie.

Harry now leads a quieter, more private life. In 2019, it was reported that Harry was expecting his first child with his wife, which led to his friend Niall O’Connor temporarily stepping in as McIlroy’s caddy at the DP World Championship in Dubai. Niall would step in again in 2022 when Harry and his wife were reportedly expecting their second child. Despite keeping details of his family life private, it’s clear that Harry’s family is of utmost importance to him.

Harry Diamond: Criticism and Defending His Caddy Role

Over the years, Harry has faced some criticism, especially for his more reserved and less vocal demeanor compared to other high-profile caddies in the world of professional golf. Some commentators have questioned Harry’s ability to communicate effectively with Rory during high-pressure situations. However, Rory McIlroy has consistently stood up for his caddy, defending his skills and loyalty.

“I just wish that, you know, these guys that criticize when things don’t go my way, they never say anything good when things do go my way,” McIlroy remarked. “They are never there to say Harry did such a great job when I win, but they are always there to criticize when we don’t win.”

This strong defense from McIlroy highlights the trust and friendship that underpin their relationship. McIlroy’s unwavering belief in Harry’s abilities has contributed significantly to their success as a team.

Conclusion: Harry Diamond’s Legacy in Golf

In 2025, Harry Diamond remains an integral part of Rory McIlroy’s success, with 26 professional wins under their belt. The duo’s dynamic relationship—built on a childhood friendship, mutual respect, and unwavering support—has proven to be one of the most enduring partnerships in professional golf. While Harry may not be as publicly visible as other caddies, his contribution to McIlroy’s career is undeniable. As Rory continues to make history on the golf course, it’s clear that Harry Diamond’s role as a caddy and close friend is one of the pillars of that success.

Their journey together continues, and it’s safe to say that as McIlroy chases even more victories, Harry Diamond will be right there by his side, offering advice, support, and friendship—just as he has from the very beginning.