Rory McIlroy has hit back at Phil Mickelson by claiming the American's verdict that the PGA Tour is "trending downwards" is illogical.

Northern Irishman McIlroy has been one of the most prominent opponents of the LIV Golf breakaway tour, which made Mickelson an early flagship signing.

Mickelson said in Jeddah last week: "I firmly believe that I'm on the winning side of how things are going to evolve and shape in the coming years for professional golf.

"I see LIV Golf trending upwards, I see the PGA Tour trending downwards. And I love the side that I'm on."

McIlroy has the likes of Tiger Woods in his corner, staying true to the tour that has for many years provided their livelihood.

"I think the people that have decided to stay here and play these tournaments, they or we haven't done anything differently than what we've always done. We're sticking to the system that has traditionally been there," McIlroy said.

"The guys that have gone over to LIV are the ones that have made the disruption they're the ones you have put the golf world in flux right now.

"For them to be talking the way they are, it's bold and there's a ton of propaganda being used. But I certainly don't see the PGA Tour trending downwards.

"Ninety-five per cent of the talent is here. You've people like Tom Kim coming through and that's the future of our game.

"I don't agree with what Phil said last week. I understand why he said it, because of the position he is in, but I don't think anyone that takes a logical view of the game of golf can agree with what he said."

Dustin Johnson, Cameron Smith, Brooks Koepka and Bryson DeChambeau are among the other high-profile players who turned their back on the PGA Tour

McIlroy, competing this week at the CJ Cup in South Carolina, has a chance to go back to the top of the world rankings, if he has a stellar week and Scottie Scheffler struggles.

With no points currently available at LIV events, it has made the route back to number one perhaps less arduous than it might have been for McIlroy.

McIlroy said: "If I get back to number one this week, it's like my ninth time getting back.

"It's like a heavyweight boxer losing a world title, and it's the journey of getting it back. That's the journey I've been on over the last 12 months."

Across his previous eight stints at number one, McIlroy has spent 106 weeks atop the rankings.

He ardently wants top spot again but says the fact of being number one would still have him wanting more.

"I got to number one in the world [for the first time] after I won the Honda Classic in 2012, and it'd been a goal of mine for maybe six months up until that point," McIlroy said. "I ended up getting there after the Honda, but I remember waking up the next morning and being like, 'Is this it?'.

"You work towards the goal for so long but don't feel any different after having achieved it, so it's a matter of having to reframe your goals and re-framing what success looks like.

"I think that's one of the great things about this game. No matter what you've achieved or what success you've had, you always want to do something else. You've got to maybe work harder to stay there."