Rory McIlroy came up agonisingly short in his bid for a second victory in the Arnold Palmer Invitational as Kurt Kitayama took the spoils.
McIlroy missed a ten-foot birdie putt on the final green to post the clubhouse lead at nine-under-par.
Kitayama, playing behind McIlroy, then birdied the 17th hole before finding the par four 18th in two shots to two-putt for the victory.
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The American was winning on the PGA Tour for the first time and held off McIlroy and Harris English, who shared second place at eight-under-par.
It was a rollercoaster final round that saw an ever-changing leaderboard, with Jordan Spieth missing a host of putts after hitting the lead in the back nine.
McIlroy, seemingly needing a fast start, bogeyed his opening two holes.
But the Holywood man came fighting back with a string of birdied and was on the lead when standing on the par three 14th hole.
A pulled tee shot saw him drop a shot on the 14th before another dropped shot followed after an errant drive on the 15th hole.
He reached the par-five 16th hole in two to set up a birdie and regain a share of the lead, but Kitayama, whose round included a triple-bogey on the par four 9th hole, would not be denied.
Still, McIlroy can take some compensation from a $1,780,000 payday for finishing in a share of second place.
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