Rory McIlroy's temper snapped during the final round of the PGA Championship when a spectator got under his skin at the worst possible moment.
The Northern Irishman had been battling all day at Aronimink, and things came to a head on the par-five 16th hole.
After finding the rough with his tee shot, McIlroy attempted an aggressive approach but watched his ball bounce off the fringe and tumble into a greenside bunker.
A fan immediately shouted something that clearly crossed a line.
Rory McIlroy lost his cool with one fan and forced security to eject them from the PGA Championship
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McIlroy spun around, fury written across his face, and snapped: "Shut the f*** up."
He wasn't done there, though.
The World No.2 used his club to point directly at the culprit, making sure security knew exactly who needed to go.
The fan was swiftly removed from the course, missing the rest of Sunday's action.
Sky Sports had to apologise to viewers for the colourful language that went out live on air.
Rory McIlroy suffered a difficult last day at the PGA Championship as his title bid faltered
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It's not the first time McIlroy has clashed with American crowds – at last year's Ryder Cup at Bethpage, he faced a torrent of abuse, with one spectator ejected for using a homophobic slur and his wife Erica Stoll even getting hit by a thrown drink.
Despite the drama, McIlroy managed to scramble for par on the hole, but the damage to his title hopes had already been done.
The Masters champion endured a frustrating afternoon, finding just four of 14 fairways as his driving let him down repeatedly.
His putting wasn't much better – several birdie chances slipped away by the narrowest of margins, including a 44-footer on the 12th that stopped tantalisingly short by just 11 inches.
McIlroy finished with a 69, leaving him on four-under for the tournament and five shots behind the winner.
His quest for a seventh major title to match Harry Vardon's European record will have to wait until the US Open in June.
Aaron Rai stole the show with a stunning final-round 65 to claim his first major championship.
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The 31-year-old from Wolverhampton finished on nine-under par, three shots clear of the field.
It's a historic win – Rai becomes the first Englishman to lift the Wanamaker Trophy since Jim Barnes managed it way back in 1919.
His triumph also ended a remarkable run of ten straight American winners at the PGA Championship.
🚨🗣️ ‘SHUT THE F— UP!’ 🫨
— NUCLR GOLF (@NUCLRGOLF) May 17, 2026
Rory McIlroy loses it on a fan during his final round at The PGA Championship and appears to direct security to have them removed. pic.twitter.com/rlIxfPW9ln
Rai embraced his wife Gaurika after completing the round of his life, capping off a memorable Sunday at Aronimink that will be remembered for all the right reasons – at least for him.