Pat Perez insisted Phil Mickelson "doesn't speak for me" after the latter's inflammatory comments over a possible Saudi Arabia-backed Super Golf League.
A number of high-profile players are said to have been targeted by organisers of the lucrative Saudi-backed breakaway, including Dustin Johnson and Bryson DeChambeau.
But the most prominent names to have discussed the league publicly – including Rory McIlroy, Jon Rahm and Collin Morikawa – have instead pledged their allegiance to the PGA Tour.
In a remarkable interview with the Fire Pit Collective's Alan Shipnuck, who is releasing a biography on Mickelson in May, the six-time major champion claimed that he and several other golfers paid their lawyers to construct the proposed breakaway competition's operating agreement.
This, as Mickelson put it, would be to "reshape how the PGA Tour operates", even though he stated Saudi Arabia has "a horrible record on human rights" and are "scary m*****f****** to get involved with".
"Knowing all of this, why would I even consider it? Because this is a once-in-a-lifetime opportunity to reshape how the PGA Tour operates," Mickelson explained.
"As nice a guy as [tour commissioner Jay] Monahan comes across as, unless you have leverage, he won't do what's right. And the Saudi money has finally given us that leverage.
"I'm not sure I even want [Super Golf League] to succeed, but just the idea of it is allowing us to get things done with the [PGA] Tour."
Justin Thomas, after his opening round at the Genesis Invitational, branded Mickelson's comments as "egotistical".
Speaking after going round in 70 on day one at the same event, Perez also hit out at the former world number two.
"He's made $800million on the Tour, I don't know what could be so bad about the Tour," Perez said.
"He doesn't speak for me. He's had an amazing career. He obviously thinks there's something else on the other side for him going down the line. If he gets it, great.
"I don't know what Phil's doing. I know Phil's got a lot of stress in life right now, and I don't know what he's doing."
Mickelson also claimed that "if the tour doesn't do the right thing, there is a high likelihood it's going to happen", and that around 20 players had signed up to the proposal.