Crowds of 30,000 are expected to attend daily over the next two weeks.
Despite authorities approving the tennis tournament to go ahead, some locals fear a lockdown is looming.
Victoria reintroduces COVID-19 restrictions while a question mark hangs over the tournament.
"Not fair to change the rules … And to have to stay in a room with no windows and no air,” she tweeted last week.
Australian Open Chaos: Kyrgios Calls Djokovic 'Tool' After Quarantine Demands, Takes Shot At Tomic's Girlfriend
The Australian tennis star said other players complaining about Australia's hotel quarantine are ‘ridiculous’.
The TV host gave the sports stars a serving, calling them “high maintenance” and “spoilt”.
"There is one rule for sport and another rule for normal people."
Tennis Australia told the cops, but did they notify the wrong people?
Peter Doohan, who famously took down reigning champion Boris Becker at Wimbledon in 1987, has died aged 56, just nine weeks
It was the biggest fine of U.S. Open so far.