Rory McIlroy applauded Kurt Kitayama's maiden PGA Tour victory after the pair were split by a single stroke at the Arnold Palmer Invitational.

The Northern Irishman tied for second alongside Harris English at eight under as Kitayama finally ended his runners-up hoodoo to claim victory at Bay Hill Club and Lodge.

After three near-misses on the tour in 2022, including a one-stroke loss to McIlroy at the CJ Cup, Kitayama's victory saw him rewarded for his perseverance.

Speaking afterwards, McIlroy was happy to sing the praises of his fellow player, while acknowledging he was frustrated to have come up shy after just missing his putt at the final hole.

"I think [Kitayama] has been playing pretty well," McIlroy said. "He's sort of persevered and played wherever he could get starts.

"All of a sudden, he's won one of the biggest events on the PGA Tour, so good for him.

"It's disappointing. To play the final five holes in one over par, with this jam-packed leaderboard, isn't really going to get it done.

"It was a battle all day. I felt like I hung in there really well and just came up one short in the end."

Kitayama qualified for The Open with his victory and will hope to finally have an impact on a major. He was tied for 72nd last year.

"Last year was special, with it being at St Andrews," he said. "The Open Championship is a really cool experience.

"I haven't done well, but I've just got to try to keep getting myself back in it and keep getting better."

Kurt Kitayama made sure his 50th start on the PGA Tour would be one he never forgets after winning the Arnold Palmer Invitational by one stroke on Sunday with a final score of nine under.

Kitayama, 30, is in his seventh season after making his debut in the 2016-17 campaign, and he finally earned his first PGA Tour victory to go with two wins on the European Tour and one Asian Tour triumph.

It was far from smooth sailing, with a catastrophic triple-bogey on the ninth hole ruining Kitayama's bright start to his final trip around Bay Hill, taking him from a two-stroke lead at 11 under, back to one behind the leaders.

But he kept his composure, rattling off seven pars in a row to begin his back nine, before what ended up being the tournament-winning birdie on the tricky par-three 17th.

Rory McIlroy and Harris English both had birdie putts on the 18th to reach nine under, but could not convert, meaning Kitayama just needed a par on the last to secure the win.

He left himself with a long two-putt for the title, and he almost made it in one, coming up an inch short to set up a tap-in par.

Illustrating how difficult the course played over the weekend, Kitayama was nine under through two rounds, and finished with back-to-back 72s as the field failed to chase him down.

McIlroy briefly tasted the outright lead after Kitayama's triple and Jordan Spieth's late collapse, but the Northern Irishman's seven birdies were balanced out by five bogeys, including two in a row on the 14th and 15th while he was out in front.

He finished tied for second at eight under with English, who was the only player in the field to finish with no bogeys on Saturday or Sunday.

Spieth found himself at 10 under through 13, but imploded with three bogeys over his next four to tie for fourth at seven under with Patrick Cantlay, Scottie Scheffler and Tyrell Hatton.

After a five-over outing on Saturday, Davis Riley bounced back with a 66 for the round of the day, catapulting him into an unlikely top-10 finish at six under.

Kurt Kitayama recovered from a double-bogey to remain the outright leader after three rounds of the Arnold Palmer Invitational, but a star-studded chasing pack is well within reach.

Kitayama led by two strokes coming into his third trip around Bay Hill, but he did well to salvage an even-par 72 to stay at nine under after four birdies on the back-nine.

His lead was trimmed to one, with world number two and defending champion Scottie Scheffler joined by Viktor Hovland in a tie for second at eight under.

Hovland was one of three competitors to shoot the round of the day, with a bogey-free 66, while Scheffler had a four-under day with seven birdies and three bogeys.

Alone in fourth at seven under is Tyrell Hatton, who matched Hovland's bogey-free 66 after rounds of 71 and 72, while world number three Rory McIlroy is joined by Harris English at six under in a tie for fifth.

Close friends Justin Thomas and Jordan Spieth will likely be paired together for the final round after joining Pierceson Coody – the day's third 66 – in a tie for seventh at five under.

Max Homa and Cameron Young are still in the hunt at four under, while top-10 talents Patrick Cantlay and Xander Schauffele headline the logjam at three under.

Jon Rahm's brilliant recent run came to a dramatic halt in windy conditions as he slipped down the leaderboard on day two at the Arnold Palmer Invitational on Friday, with Kurt Kitayama taking a two-stroke lead.

Rahm, who has claimed five wins from his past nine starts worldwide, had led the event after an opening-day seven-under 65 but carded a four-over round of 76 on day two to be six strokes off the pace at three-under overall.

The Spaniard's round saw him come back to earth, falling away dramatically late with three bogeys and a double bogey in his final five holes at the Bay Hill Club and Lodge in Florida.

Rahm's struggles opened the door for Kitayama, who had been joint second after the first day. Kitayama backed that up with a four-under 68 with five birdies and one bogey to be nine-under overall.

Kitayama has led three events this season after 36 holes and is yet to convert any into victories.

Over Kitayama's shoulder is three-time major winner Jordan Spieth who found his putting groove to card a three-under-par 69, sitting two shots off the lead at seven-under overall. Spieth might have been closer if not for a bogey on the 18th after a poor drive.

Xander Schauffele and Corey Conners are tied at six under, with Davis Riley, Patrick Cantlay, Matt Fitzpatrick and Justin Thomas behind them at five under. Conners carded the day's best round with a six-under 66.

Last month's Honda Classic winner Chris Kirk was tied for second after the opening day but also dropped away with a day-two 75 that included two double bogeys.

Among those to miss the projected cut, with play suspended with two players left on the course, were Collin Morikawa, Tom Hoge and Hideki Matsuyama.

Jon Rahm lived up to his billing as the hottest talent in professional golf after starting his week at the Arnold Palmer Invitational with a seven-under 65 on Thursday.

Rahm, the world number one, boasts five wins from his past nine starts worldwide and has not finished an event outside the top 10 since finding himself in a tie for 15th in August's Tour Championship.

Coming off a victory in his most recent outing at the Genesis Invitational, Rahm is looking to secure another of the PGA Tour's new elevated events, with the increased prize pool drawing 44 of the world's top-50 players to the famous Bay Hill course.

He certainly made a promising start in Florida, heading into day two with a two-shot lead at the top of the leader board.

Rahm began his day with three consecutive birdies and finished with another two on 17 and 18 having carded an eagle on the par-five 16th.

His sole bogey came on hole eight, failing to recover a par after a wayward tee shot.

Another competitor coming off a win in his most recent start, last week's Honda Classic champion Chris Kirk is tied for second at five under with Cameron Young and Kurt Kitayama.

Not a single player finished their round bogey-free, but Kitayama and Max Homa (two under) made it through 17 holes before their first blemishes came on the 18th.

The group tied for fifth at four under includes some of the game's biggest stars, with world number two Scottie Scheffler joined by three-time major winner Jordan Spieth, Patrick Cantlay, Xander Schauffele and resurgent fan favourite Rickie Fowler.

Scottie Scheffler backed up last month's Phoenix Open triumph by taking out the Arnold Palmer Invitational by one stroke after a final round of 72 at Bay Hill on Sunday.

Scheffler carded an even-par round with three birdies and three bogeys to finish five under and one shot ahead of Viktor Hovland, Billy Horschel and Tyrrell Hatton – who stormed 10 places up the leaderboard with a final-day 69 to earn a tie of second.

The 25-year-old Scheffler made his move on the third day, with a five-under 68 launching him into contention. American Scheffler will now move up to fifth on the official world rankings.

Joint overnight leaders Horschel and Talor Gooch lost their grip on top spot, with the former making three bogeys and a double bogey on his final-day front nine before finishing with a three-over 75.

Gooch ended up two further strokes back with a five-over 77 after four bogeys and two double bogeys on his front nine.

Norwegian world number four Hovland loomed as the likely player to capitalise on their misfortune, as he assumed the lead.

But five bogeys in Hovland's closing 11 holes left the door open for Scheffler, who held his nerve, notably making an excellent long putt to save par on the 15th hole.

"It feels great, especially to win on such a difficult golf course and the way it finished," Scheffler told Sky Sports.

"I didn't play my best stuff, I just kept grinding and made some key putts down the stretch, and it was really just a fight all day."

First-round leader Rory McIlroy never threatened on Sunday, with a four-over-76 meaning he finished back at one over after 72 holes.

World number one Jon Rahm was one stroke behind the Northern Irishman after a final-round 74.

Norwegian world number four Viktor Hovland surrendered his lead at the Arnold Palmer Invitational with two bogeys to finish the third day at Bay Hill on Saturday.

Hovland, who was the leader at halfway, carded a three-over 75 with six bogeys, saving face with a hole-out eagle from the bunker on the sixth and birdie on the eighth.

The Norwegian had retained his lead until bogeys on 17 and 18 allowed American pair Billy Horschel and Talor Gooch to claim a share of the lead.

Horschel and Gooch are seven-under after 54 holes, with Hovland one stroke back, followed by Scottie Scheffler at five-under after he carded a joint round-high four-under-68.

"I was really in a good rhythm until some bad shots on the back nine," Hovland told reporters.

On his hole-out eagle, he added: "That was awesome. Obviously, not the greatest start to the day. Even the pars that I made on the next few holes was really scrappy. Hit some really bad shots.

"Then obviously walking up to the greenside bunker on that hole was hard on the downslope and no green to work it. I thought I was in no man's land, just try to chunk it out there and give myself a putt at it. It came out really soft and landed in the first cut and just died and went in."

Horschel carded a one-under-71 to claim the joint lead, with three bogeys and four birdies, including closing out with an important birdie putt.

Gooch had an even round for 72, bogeying the 18th to settle for a share of the lead after he had birdied both the 15th – with a 33-foot putt - and 16th.

Scheffler surged up 16 spots and into contention with a round that included three birdies and an eagle on his back nine. The American rolled in a 21-footer for eagle on the 16th.

Max Homa, playing alongside Scheffler, landed a rare ace on the 14th hole although he is off the pace with an even card overall in a group featuring top-ranked Jon Rahm.

Gary Woodland is behind Scheffler at four-under, with Rory McIlroy among a group of three at three-under ahead of the final day.

Viktor Hovland holds a two-shot lead at the half-way point of the Arnold Palmer Invitational after Rory McIlroy endured a disappointing finish.

Overnight leader McIlroy was not as sharp as he was on the opening day at Bay Hill but still looked in with a chance of retaining his status as pacesetter for much of the round.

That was until the 15th, when he needed three putts from 30 feet. He then missed a birdie opportunity on 16 and failed to save par from eight feet on 17.

The Northern Irishman ultimately finished at level par for the day with 72 – Hovland, who started on the 10th, carded 66, giving him the round of the day and the lead.

His score would have been even better had he not bogeyed the 13th, however he responded admirably to that set-back with three birdies in his next four holes.

Hovland added two more on the fourth and sixth to ultimately set the clubhouse lead as he moved to nine under for the tournament – McIlroy failed to rise to his challenge.

Joining McIlroy two shots back on seven under in a tie for second are Talor Gooch and Tyrrell Hatton, the latter of whom felt his four-under 68 was "pretty flattering".

Similarly, Hovland is not getting carried away with his position in the standings, particularly considering he was only two shots off the lead heading in the weekend last year and went on to finish 15 off the pace.

"I kind of try to forget the weekend here last year," Hovland told the PGA Tour. "I played really well the first few days, very similar to how I played so far this year.

"The course just gets harder and harder every single day, and it started blowing. A few too many bad swings and I ended up in bad spots and just didn't really take my medicine."

As for McIlroy, the four-time major champion was taken aback by how quickly conditions on the course changed from Thursday, adamant he will be better prepared on day three.

"Those are the sort of greens you expect to see late on a Sunday, not late on a Friday," McIlroy added. "It's going to be interesting to see where they go from here, but it's going to be a good test over the weekend.

"I'm glad I got 18 holes in those conditions because the course definitely changed a lot from when I played it yesterday morning to this afternoon. I'll be a little more prepared for it [on Saturday]."

Billy Horschel is one shot further back on six under, and then there's a three-shot gap to a group of seven – world number one Jon Rahm is at two under.

Patrick Reed, Henrik Stenson and Justin Rose were among those to miss the cut, which was set at three over par.

Four-time major winner Rory McIlroy leads by two strokes after a first-round 65 that included an eagle at the Arnold Palmer Invitational at Bay Hill in Florida on Thursday.

McIlroy made six birdies and an eagle on the 16th hole to card a seven-under-65 with a bogey on the 11th the only blemish on his scorecard.

The Northern Irishman, who made 11 of 14 fairways, leads by two strokes from American trio Beau Hossler, JJ Spaun and Billy Horschel, with a group of six players one further shot back including Sungjae Im and Will Zalatoris.

“This is my fourth start of the calendar year. I’ve had one really good chance to win and probably one other half chance," McIlroy told reporters after day one.

"I feel like I’m playing well enough to have chances to win golf tournaments, but all you can ask of yourself is to keep putting yourself in those positions on Sundays and then you see where your game really is.

“Hopefully, this is another week where I put myself in a position where I can really see where my game is when the pressure is on.”

McIlroy's day was highlighted by his 41-foot putt for eagle on the par-five 16th hole.

"I played the par-fives particularly well, and that was the bulk of the score," said McIlroy who won at Bay Hill in 2018.

"I've said this all along: You can play within yourself here and still shoot a good score, I feel, if you're just disciplined and pick off the birdies where you're supposed to."

McIlroy is one of four players from the PGA Tour's top six, with world number one Jon Rahm struggling with an even round on the opening day - including falling short on a gimme putt - to be seven shots off the pace.

Viktor Hovland carded a three-under-round of 69, while Scottie Scheffler is two under after the first day.

Bryson DeChambeau described his battle with injury as "one of the hardest moments of my life" as he confirmed his withdrawal from the Arnold Palmer Invitational.

Hand and hip injuries that forced DeChambeau to withdraw from the Saudi International this month have kept the world number 12 out of action.

And he will not make his return at the prestigious PGA Tour event at Bay Hill this week, pointing to a desire not to risk re-injury by playing again before he is 100 per cent.

Setting his sights on The Players Championship at TPC Sawgrass next week, the 2020 U.S. Open champion said in a video posted on Twitter: "Man, it's a tough decision right now.

"I have a lot of work to do to get everything back into order for this week and I just feel like it's too short of time for me to get back to 100 per cent and playing at 100 per cent capacity.

"Right now, I'm like 90 per cent. I don't want to go out there and hurt myself even more, and not be 100 per cent ready for the rest of the season.

"I don't want to come back early and then have to take more time off.

"It's a hard decision I have to make right now, but I'm going to have to unfortunately not play this week.

"At this point in time, I've got to take another week off and I'm going to try and get back and play for The Players.

"Right now, I just can't risk going out there and having it reaggravate. This has been one of the hardest moments of my life.

"I'm not able to do much, yes although I can hit some golf balls, it's not comfortable or fully comfortable.

"It's a bit frustrating but I appreciate your support. I want to get back out there as soon as possible but it's just not ready yet."

DeChambeau won the Arnold Palmer Invitational last year by one stroke ahead of Lee Westwood. That is his only victory since his sole major title at the U.S. Open two years ago.