Player, who now resides in Florida on a part-time basis, filed a legal complaint in May in Palm Beach County against his son Marc Player, followed by a November lawsuit against Marc's son, Damian Player.
The 87-year-old says the duo tried to sell his memorabilia, including trophies and clubs, despite an agreement requiring the items be returned to him after a business relationship between the parties ended in 2019.
Player has already had several items sold against his wishes during auctions last year, including his 1974 Masters Tournament Trophy for over $500 000, his South African Open Trophy for nearly $50 000 and his 1965 US Open irons for close to $20 000.
Player confirmed in a statement back in August that these items were sold without his permission.
"These items belong to me and I have taken action to recover them," the post said.
The lawsuit also claims Marc Player failed to transfer social media accounts and the web domain name GaryPlayer.com to his father.
"Only with the greatest reluctance and after many years of trying to avoid this did Gary have to enforce his rights in this way," said Gary Player's attorney Stuart Singer.
Player is considered one of the greatest golfers of all time, winning nine regular majors and a further nine on the Champions Tour.
He has six children and was married to his wife Vivienne for more than 60 years before she died of cancer in 2021.
Marc Player worked with his father for nearly two decades as a manager.