Rory McIlroy etched his name in golfing history after becoming only the fifth man to complete a career Grand Slam following his win at the 2025 Masters.
His dramatic victory in a play-off round against Justin Rose at Augusta saw him win the tournament for the first time at the 16th attempt.
It saw him net a sizeable £3.2million ($4.2million) in prize money alongside the famous Green Jacket given to the victor.
That also means a sizeable chunk of money for his caddie, who is none other than his childhood friend Harry Diamond – who has advised McIlroy since 2017.
If customary caddie earnings are to be applied to this year’s Masters, Diamond will net £320,000 from the tournament – with caddies typically taking home ten per cent of the winner’s prize money.
While McIlroy celebrated his first major win since 2014, he has still been able to bring home over $10million in prize money in recent seasons.
Rory McIlroy amd his caddie Harry Diamond hold the Masters trophy together – with McIlroy also seen in the winner’s famous Green Jacket
McIlroy’s victory over Justin Rose saw him net a sizeable £3.2million in prize money
That also means a sizeable chunk of money for his caddie, who is none other than his childhood friend Harry Diamond
Should Diamond’s earnings be around seven per cent of McIlroy’s total prize money on tour, his bonuses are likely to have been close to the seven figure mark since the 2021-22 season.
According to veteran PGA Tour looper Brennan Little, caddies usually earn around $2,000 per week but ‘everything is worked out between you and the player.’
Little told Golf Monthly: ‘After a few years you’ll get a raise. Or you’ll get bonuses at the end of the year. It just varies by the player.
‘I think generally if you were looking for a number it would be $2,000 a week, and then 7 to 8 per cent and 10 per cent.’
However, for a player like McIlroy who has been at the top level of the sport for well over a decade, Diamond is likely to earn even more than that.
Speaking on his relationship with his caddie after his maiden Masters victory, McIlroy said: ‘I’ve known Harry since I was seven years old. 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 (tearing up).
‘To be able to share this with him after all the close calls that we’ve had, all 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.’
