LIV Golf launched in October 2021, sparking significant infighting in men's golf, with more than 30 members of the PGA Tour lured to its lucrative rival, including last year's Open Championship winner Cameron Smith of Australia and long-time world number one Dustin Johnson of the United States.

Its events are 54-hole competitions played with a shotgun start and without cuts, and the PGA Tour responded by increasing prize money at its "elevated events" and suspending LIV players.

The PGA Tour plans to introduce eight "designated events" featuring between 70 and 78 players, played without a midway cut after 36 hole from 2024.

Its Commissioner Jay Monahan claimed the changes would have a transformative impact on the Tour.

"These smaller, designated event fields will not only deliver substantial, can’t-miss tournaments to our fans at important intervals throughout the season, but they will also enhance the quality of full-field events," he said in a letter to the Tour's members.

"Together, this approach provides a schedule that is cohesive, compelling, consequential and with clarity for fans, players and sponsors alike."

The top 50 players from the previous year's FedEx Cuprankings and top 10 players not otherwise eligible on the current standings are set to be eligible for the designated events, with other qualification criteria, including performance in non-designated events, full FedEx Cup point events winners, top 30 status in the Official World Golf Ranking and four sponsor exemptions.

The changes would secure the involvement of top players on the Tour for all four days of tournaments, but would not affect the four majors, Players Championship and the FedEx Cup Playoffs.

LIV Golf noted similarities with the format used at its events.

"Imitation is the greatest form of flattery," it wrote on Twitter.

"Congratulations PGA Tour.

"Welcome to the future."

Northern Ireland's Rory McIlroy, a four-time major winner and vocal opponent of LIV Golf, claimed that the PGA Tour's changes would create "really compelling product" and reward "good play".

Reigning Masters champion Scottie Scheffler of the US insisted players would still gave to "earn your way still out here on tour".

American three-time major winner Jordan Spieth acknowledged he "would be lying if I said that we would have gone through this without LIV", but expressed support for the changes.

LIV Golf players, including England's Ian Poulter and Lee Westwood, have mocked the PGA Tour's reforms.

Poulter wrote on Twitter that it "sounds very similar to another product that's been spoken so badly about by media and commentators".

Westwood observed, "I’ve spent the last year reading how good full fields and cuts are."

LIV Golf has proved controversial for its links to Saudi Arabia, with the tour financed by the Public Investment Fund (PIF).

The PIF is Saudi Arabia's sovereign wealth fund and critics say the country is using it for sportswashing.