The next event in the Greg Norman-run LIV Golf event starts on June 30 outside Portland, Oregon.

Koepka was the second player, behind Rory McIlroy, to speak out against a rival league with just 48-player fields in March 2020 when he said, "I have a hard time believing golf should be about just 48 players."

"Money isn't going to change my life," Koepka said at the time.

The proposed rival league then was different from LIV Golf, presented as the "Premier Golf League" though still relying on Saudi Arabia's sovereign wealth fund. Norman and LIV Golf took the idea of 48-man fields, no cuts with a team component.

LIV Golf have not yet announced Koepka's signing amid speculation that a few others are soon to join.

One who has announced his move is Ancer, who won a World Golf Championship event last year.

RIGHT: PGA Tour boss Jay Monahan held a player meeting this week to discuss the circuit's plans. PHOTO: Kevin C. Cox/Getty Images.

Ancer said his decision was not taken lightly and that joining LIV would allow him more time to invest and give back to the game by helping it grow in his home country Mexico.

"I never could have imagined being in this position today," he said on Twitter.

The latest developments came as the PGA Tour held a player meeting at this week's Travelers Championship, during which Commissioner Jay Monahan spoke of the plans to reshape the Tour season and its tournaments.

According to two players in the meeting, the Tour plans to return to a calendar season that would start in January and the FedExCup playoffs would be eligible for only for the top-70 players.

Currently, the top-125 make the postseason, with the top-70 advancing to the second playoff event and the top-30 to the Tour Championship. The new plan is for the top-70 at the start, then top-50 and top-30.

The fall (autumn) would be used for players beyond 70th to secure cards for the following year, although research showed most inside the top-100 would be safe.

The Tour was still looking at three fall events for limited fields, along with eight tournaments during the regular season that would offer spiked purses in the range of $US20 million.

Koepka went back-to-back in the U.S. Open (2017-18) and PGA Championship (2018-19), though his game has been in decline since then because of a series of injuries.

His last victory was the Phoenix Open in February 2021 and he has fallen to No.19 in the world. In the majors this year, he missed the cut at the Masters and has finished out of the top-50 in the PGA Championship and U.S. Open.