The most important player to turn his back on the PGA Tour is Bryson DeChambeau.
The American won the 2020 US Open at the age of 28.
The day before, the PGA Tour said it was suspending anyone who joined the rival circuit.
The second event of the series will be held in Portland, Oregon, on 30 June.
Greg Norman said that DeChambeau was an exciting addition because he is passionate and innovative in his approach.
He supports our mission of doing things differently and is not afraid to think outside the box.
The eighth major champion to join the series is DeChambeau.
He has spent most of the past two years in the top 10 in the world rankings, but is now 28th after an injury at the Saudi International.
He took a huge risk to play in the Masters after recovering from that injury. After missing the cut at Augusta National, he had surgery on his hand and missed the USPGA Championship.
The statement sent to all of the tour's members on Thursday said that DeChambeau's time on the tour was done.
In accordance with the PGA Tour's tournament regulations, the players competing this week without releases are suspended or otherwise no longer eligible to participate in the tournament.
If any other players participate in future Saudi Golf League events in violation of our regulations, they will lose their jobs.
The players have made their decisions based on their finances.
They can't demand the same things as you. Our fans and partners are disrespected by that expectation.
Requests for waivers to play in the first LIV Golf event were not allowed by the PGA Tour.
There are 48 men in the field, including six-time major champion Phil Mickelson.
On Tuesday, Johnson resigned his membership of the tour, while Lefty was hoping to keep his membership.
England's Ian Poulter has vowed to fight the decision, while Lee Westwood and others confirmed they had left the American Tour before the memo was sent out.
The situation is being kept quiet by the European-basedDP World Tour. It has a strategic alliance with the PGA Tour.
The winner of the 2010 US Open said on Thursday that they may have to.
There's more to come.