Finally exorcising his demons at Augusta National Golf Club, Rory McIlroy made history at The Masters on Sunday, besting Ryder Cup teammate Justin Rose in a playoff to become just the sixth golfer in history to complete the career Grand Slam.
But as McIlroy himself recognized following his triumph, the win wasn't his alone, as he gave all the credit in the world to his longtime caddie and friend, Harry Diamond.
The two have known each other for nearly three decades and began their professional relationship in 2017 after McIlroy split with J.P. Fitzgerald, who was on the bag for Rory's first four major championship victories.
McIlroy was extremely emotional when discussing Diamond in his post-tournament presser, even being brought to tears as he stated Sunday's victory was just as much Harry's as it was his.
“I’ve known Harry since I was seven years old," McIlroy said in his post-tournament presser. "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.
“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 continued, “[Diamond] is a massive part of what I do, and I couldn’t think of anyone better to share it with than him.”
As McIlroy mentioned, Diamond has faced a lot of criticism over the years, as has Rory himself for employing a friend instead of a veteran caddie. But the relationship obviously works well for both, so good on them for consistently shrugging off said criticism.
Aside from the appeal of working alongside his best friend, Diamond undoubtedly enjoys the financial aspect of his job, as he's made millions of dollars over the years. With Rory collecting the largest check in Masters history on Sunday to the tune of $4.2 million, Harry saw his bank account get another big boost as well.
And as we dug a little deeper into McIlroy's earnings during this 2025 PGA Tour season, we found that Diamond has actually made more money than several high-profile players.
Rory McIlroy's caddie, Harry Diamond, has made more than $1.2 million in 2025
Now, we don't know the exact agreement McIlroy and Diamond have as far as financials are concerned.
That said, most players and caddies roll with the "10-7-5" rule, which dictates that the caddie receives 10% of his player's earnings for a victory, 7% for a top-10 finish, and 5% for any finish outside the top 10. So, for the purposes of this piece, we'll just assume this is the formula they use.
Including his appearance at Augusta, McIlroy has made six starts this season that apply to the PGA Tour money list.
In addition to his Masters win, of course, Rory also took victories at the AT&T Pebble Beach Pro-Am and The Players Championship. For these three victories, the world No. 2 has collected a combined $12.3 million. As such, simple math tells us that Diamond's share is $1.23 million.
In his final tuneup ahead of Augusta, McIlroy tied for fifth at the Texas Children's Houston Open, earning $337,843.75. At 7% for a top-five finish, Diamond collected $23,649.06.
In his other two starts, Rory tied for 17th at The Genesis Invitational, earning $270,714.29, and tied for 15th at the Arnold Palmer Invitational, collecting $349,000. At 5% for non-top-10s, Harry made a combined $30,985.71.
Add all that up and Diamond has earned $1,284,634.77.
Tournament | Finish | Rory McIlroy winnings | Harry Diamond winnings |
|---|---|---|---|
AT&T Pebble Beach Pro-Am | 1 | $3,600,000 | $360,000 |
The Genesis Invitational | T17 | $270,714.29 | $13,535.71 |
Arnold Palmer Invitational | T15 | $349,000 | $17,450 |
The Players Championship | 1 | $4,500,000 | $450,000 |
Texas Children's Houston Open | T5 | $337,843.75 | $23,649.06 |
The Masters | 1 | $4,200,000 | $420,000 |
Total | $13,257,058.04 | $1,284,634.77 |
If one were to take that figure and place it on the PGA Tour money list right now, Diamond would sit just outside the top 50 at No. 52, ranking just behind Byeong Hun An (No. 50, $1,294,322) and Cam Davis (No. 51, $1,290,400).
It's worth noting that Harry has only made about $55,000 less than Jordan Spieth, who sits at No. 48 with $1,339,868.
But look at some of the names Diamond would be above:
- Billy Horschel (No. 53, $1,193,354)
- Wyndham Clark (No. 54, $1,168,810)
- Sam Burns (No. 60, $1,070,536)
- Xander Schauffele (No. 61, 1,032,100)
- Tom Kim (No. 66, $923,693)
- Will Zalatoris (No. 69, $911,753)
- Sahith Theegala (No. 82, $755,904)
- Max Homa (No. 88, $668,333)
- Adam Scott (No. 89, $663,272)
- Matt Fitzpatrick (No. 96, $564,911)
- Rickie Fowler (No. 105, $461,153)
Come on, that's just fun. And Diamond's total above doesn't even include whatever his weekly stipend is, which is typically between $1,500 and $4,000. Nor does it include his 7% share of the $415,800 collected for tying for fourth at the Dubai Desert Classic back in January, which comes out to another $29,106.
As that's a DP World Tour event, we obviously opted not to apply it, as those earnings don't matter regarding the PGA Tour money list.
One now just has to wonder how much more Rory McIlroy and Harry Diamond will win this year.