Rory McIlroy admitted golf is "testing" him more than usual after enduring yet another near miss at the BMW PGA Championship, losing to Billy Horschel in a play-off.

McIlroy, Horschel and Thriston Lawrence were forced into a three-way play-off after they all finished 20-under through four rounds at Wentworth.

Lawrence carded a final round of 65 to close a two-shot gap to McIlroy and Horschel, but the South African bogeyed the first play-off hole to put himself out of contention.

Horschel then wrapped up his second triumph at Wentworth with an eagle on the second, having previously triumphed at the event in 2021.

McIlroy has endured a frustrating year, missing two close-range putts when in pole position to win the US Open in June, then slipping again on the final round to finish second at last week's Irish Open.

Speaking after Sunday's play-off, the Northern Irishman said: "Last week was a tough one but I left there with my head held high with the way I played the last hole, trying to make three.

"Two weeks in a row I've played well. Just not quite well enough. The game is testing me a little more than it has done in the past, but that's fine.

"It could have been a different year but the nice thing is there's next year and the year after and the year after and the year after.

"If you think of my career as a 30-year journey, it's only one year in a 30-year journey, and hopefully the other 29 are a little more productive or a little bit better."

Horschel, meanwhile, admitted the struggles of the four-time major winner, a close friend of his, put a slight dampener on his victory.

"I'm thrilled and excited for the way I played," Horschel said.

"At the same time I'm a little disappointed – Rory is a great friend of mine and he's a generational talent. I know how close he's been this year so I feel for him.

"I needed a bit of luck. There was a lot of luck on my side to get this victory today."