If you read the news, you would have heard of the saga surrounding preferential treatments for the top 3 tennis players where they can enjoy freedom in Adelaide while the other lower ranked players have to suffer strict quarantine conditions in Melbourne. The fact is, they are the top players and they have greater bargaining powers and SA government accepts them to go there as long as they play the exhibition matches. I think it s fair. They attract audiences therefore they can stay in Adelaide before the Australian Open in Melbourne.