Northern Ireland's Graeme McDowell becomes the latest major champion to exit LIV Golf.
McDowell joined LIV when the breakaway tour launched in 2022
The 2010 US Open winner, McDowell, 47, announced on Monday he has "decided not to pursue" LIV 2.0, the new version of the breakaway tour which is due to start in 2027.
Major winners Jon Rahm and Louis Oosthuizen have also confirmed their departures, while McDowell's fellow countryman Tom McKibbin said he was exiting LIV to return to the DP World Tour last week.
England's Tyrrell Hatton and Ian Poulter have also left the competition.
Saudi's Public Investment Fund withdrew its backing from LIV in April - having pumped in more than $5bn (£3.8bn) - leading to the league filing for bankruptcy protection in the United States last month.
It has secured a possible $300m (£224m) in financing from BC Partners Credit to try to move forward with 'LIV 2.0', but only a handful of players have so far committed.
Source: BBC Sport