Djokovic, who is looking to win his 10th Australian Open title in Melbourne this month, is waiting for Australian Immigration Minister Alex Hawke to decide whether to revoke his reinstated visa ahead of the tournament.
Djokovic, 34, had his visa canceled after entering Australia without a valid exemption for the country’s vaccination requirements, but a judge ruled on Monday he could stay.
Nadal is in the same half of the table as Djokovic, but the duo will only meet in the semi-finals if they make it that far.
No.2 seed Daniiel Medvedev, last year’s US Open champion, faces Henri Laaksonen in the first round, while No.3 seed Alexander Zverev faces fellow German Daniel Altmaier.
13-seeded Osaka will begin their title defense against Camila Osorio, while Barty’s first-round opponent will advance.
Two-time Grand Slam champion Barty’s best performance in her home Grand Slam came in 2020 when she reached the semi-finals.
Victoria State announced Thursday that ticket sales for this year’s tournament will be capped at 50% if they haven’t already reached that level.
The amendment is made “to ensure the health and safety of fans who frequent Melbourne Park,” according to a statement.
Tickets already purchased remain valid and will not be canceled or changed, and there will be no change in ground pass access.
Face masks will be mandatory except when eating or drinking, and indoor social distancing measures will be enforced according to the state’s COVIDSafe parameters.
“As hospitalizations and cases of COVID-19 continue to increase in Victoria, these mitigation strategies are proportionate and designed to help limit the spread of COVID-19,” the statement added.
Last year, the Australian Open was delayed until February due to the pandemic. A lockdown in Victoria state meant the games went on without fans for five days. Once lifted, the capacity was capped at 30,000 spectators per day.
CNN has reached out to Tennis Australia for comment, but has yet to receive a response.
The 2022 Australian Open begins on Monday January 17 and ends on January 30.