The Latest on Monday from the Australian Open at Melbourne Park (all times local):

11 a.m.

Showing evidence of vaccination has been a requirement for all those entering Melbourne Park on Day 1 of the Australian Open, the morning after nine-time champion Novak Djokovic was deported for not meeting the country’s strict COVID-19 vaccination rules.

Masked spectators arrive for the first round matches at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. 17, 2022. (AP PhotoHamish Blair)

Masked spectators arrive for the first round matches at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. 17, 2022. (AP PhotoHamish Blair)

A security official with a loud speaker reminded people queuing outside the complex that hosts the first Grand Slam tennis tournament of the year to have their proof of vaccination ready for inspection and added, “oh, a ticket would be handy, too!”

The Australian Open begins under mostly cloudy skies with a threat of rain showers.

Fifth-seeded Maria Sakkari is playing Tatjana Maria in the opening match on Rod Laver Arena. Women’s defending champion Naomi Osaka was scheduled to play the second match on the tournament’s main court, followed by Rafael Nadal. Women’s top seed Ash Barty had a night match.

Masked spectators arrive for the first round matches at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. 17, 2022. (AP PhotoHamish Blair)

Masked spectators arrive for the first round matches at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. 17, 2022. (AP PhotoHamish Blair)

Nadal is seeking a men's record 21st Grand Slam singles title. He is tied with Djokovic and Roger Federer on 20. Djokovic was a late withdrawal because he's not vaccinated and failed to have his visa cancellation overturned in a Federal Court hearing on Sunday. Federer is still recovering from a knee injury.

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