Rory McIlroy climbed back into the top 10 in the Official World Golf Rankings following his first win in 18 months, and knocked Brooks Koepka out of that group in the process.

McIlroy's one-shot victory at the Wells Fargo Championship vaulted him up six spots to seventh after having fallen to his lowest ranking in a decade. Koepka,who missed the cut at the Masters in his only event since a March knee procedure, fell two spots to 12.

Bryson DeChambeau climbed to a career-best fourth in the world with his tie for ninth at the Quail Hollow Club. It was a remarkable turnaround for DeChambeau,who had to scramble back to North Carolina from Dallas on Saturday morningafter thinking he had missed the cut.

He is now behind only Dustin Johnson, Justin Thomas and Jon Rahm in the world rankings. DeChambeau climbed past Xander Schauffele, who finished tied 14th at the Wells Fargo to drop to fifth.

McIlroy's 19th PGA Tour title lifted him to seventh in the world rankings just 10 days before the year’s second major at another of his happy hunting grounds.

The US PGA Championship is being staged at Kiawah Island for the first time since McIlroy romped to an eight-shot win there in 2012 and he was quickly made favourite to claim a fifth major title and first since 2014.

"This victory’s very important going into Kiawah in a couple weeks’ time," said McIlroy, who added Pete Cowen to his coaching team earlier this year in a bid to rediscover his form.

"Obviously I played really well there last time. I’m honestly not sure whether they’ve made any changes to the golf course since, but I’ll go up there and try to do my homework and refamiliarise myself with the layout a little bit.

"But it’s certainly great timing. This is obviously a huge confidence boost going in there knowing that my game is closer than it has been. I’ll be able to poke holes in everything that I did today, it’s certainly far from perfect, but this one is validation that I’m on the right track."

McIlroy revealed he would not even have been able to tee off at Quail Hollow if he had been handed an early start time on Thursday after suffering a freak neck injury on the range.

"I had done a really good practice session on the range," McIlroy said. "I hit a 3-iron, flushed it and I turned back to talk to Harry (Diamond, his caddie) and as I turned, my left side of my neck just completely locked up and I couldn’t move it. It was really, really strange.

"So I stopped what I was doing and I went and got some treatment. I iced it all of Wednesday afternoon, Wednesday night. I woke up Thursday, didn’t have much movement. Was trying to make a backswing and could only maybe take it half the way back before it started to catch.

"If I had been playing Thursday morning, I probably would have pulled out, but I had enough time to get treatment Thursday morning, get it loosened up. It was still bothering me on Thursday afternoon.

"People probably saw the tape that was on my neck, but it sort of loosened up as the week went on."

"It’s just amazing how these little things, they all add up. It’s so cool to be able to win here again, see some of the hard work that I’ve put in over the past couple of months finally start to pay off."