Just a year ago, the Australian Open strictly required players to be fully vaccinated, and on top of that tested them all the time and put them in isolation if the test was positive for COVID-19. Two years ago the tournament was played in an extremely controled enviroment, in a biosecure bubble. In 2023, the rules are so relaxed that even players positive for coronavirus can compete.
Players will not be tested for COVID-19 at the 2023 Australian Open and will be allowed to play even if they have the virus. Athletes who are sick are only recommended but not required to stay away from competition.