Italy's Matteo Manassero drew an admiring tribute from Rory McIlroy after becoming the youngest ever winner of the BMW PGA Championship at Wentworth following a four-hole play-off.

Manassero, Scotland's Marc Warren and former champion Simon Khan went into extra holes after finishing tied on 10 under par at Wentworth, 2010 winner Khan setting the clubhouse target after a closing 66 that no-one could overtake.

Warren was eliminated on the first play-off hole after his drive finished in an unplayable lie in the trees and his fourth shot found the water guarding the green, with Manassero and Khan both making birdies on the par-five 18th.

Two more visits to the 18th failed to identify a winner, but when Khan's approach plunged into the water on the fourth extra hole, Manassero's two-putt birdie was enough to claim the #666,000 first prize and a fourth European Tour title at the age of 20.

McIlroy, who was 19 when he won his first title in Dubai, wrote on Twitter: "Massive congrats to @ManasseroMatteo!! Makes me feel like an old man! #phenom."

"I'm happy that he wrote that tweet," Manassero said. "I've got so much respect for Rory. I think he's got the best game, the most talented player out here."