Rory McIlroy has pulled out of the Arnold Palmer Invitational at Bay Hill due to a back injury.
The PGA Tour confirmed the world No 2 had withdrawn just before his third round got under way on Saturday.
McIlroy is understood to have experienced muscle spasms in his back that would not go away.
It is only the third time McIlroy has been forced to withdraw from a tournament.
He left the Nedbank Golf Challenge in 2009 with a flu virus and food poisoning, and withdrew from the Honda Classic in the middle of the second round in 2013, first citing a sore wisdom tooth and a week later apologizing by saying his head was not in the right place.
The back spasms are not thought be to serious enough to keep him out of The Players Championship next week, where McIlroy is the defending champion.
Even so, it the first significant issue he has experienced with his back since the Tour Championship in 2023, when he played through discomfort. A month later, he went 4-1 and led Europe to another Ryder Cup victory.
Please use Chrome browser for a more accessible video player
Rory McIlroy was forced to withdraw from the Arnold Palmer Invitational with lower back injury ahead of the third round.
He is approaching a big stretch of consecutive tournaments that culminates with the defence of his Masters title between April 9-12.
Coverage from the Arnold Palmer Invitational continues on Saturday on Sky Sports Golf and Sky Sports Main Event. Stream the PGA Tour and more with no contract.
Get the best prices and book a round at one of 1,700 courses across the UK & Ireland
