Novak Djokovic has been drawn to play in the Australian Open despite ongoing uncertainty over whether his visa will be cancelled again by the government.
The world number one men's player will defend his title against fellow Serb Miomir Kecmanovic in the first round.
However, Australia's Immigration Minister Alex Hawke is still considering using his powers to revoke Djokovic's visa, a spokesman said.
Djokovic was temporarily barred entry last week because he is not vaccinated.
He said his Covid infection in mid-December met the conditions for foreigners entering Australia, but authorities cancelled his visa on the basis that it was not a valid exemption.
Djokovic, 34, was held in immigration detention in Melbourne for five days while he challenged the deportation order. On Monday a court overturned the government's visa cancellation after finding that immigration officials had not followed proper procedure.
But Mr Hawke said that he was still considering cancelling the Serbian tennis star's visa for other reasons, which could include "character grounds" on the basis that he misled the Australian Border Force.
Djokovic admitted on Wednesday that he had also broken Covid isolation rules in Serbia after meeting up with people when he knew he was positive with the virus.
He also admitted he had made errors on his travel form into Australia, by ticking a box declaring he had not travelled anywhere 14 days prior to entering the country, when in fact he had been to Spain.
Djokovic said this was a "human error" made by his agent. However, a false declaration on a travel form - accidental or not - is grounds for a visa cancellation.
On Thursday, Prime Minister Scott Morrison declined to say when a decision might come from his government, quashing press gallery reports that it would be made imminently.
"These are personal ministerial powers able to be exercised by Minister Hawke and I don't propose to make any further comment at this time," he said at a press briefing.
Intense criticism has been aimed at both Djokovic and Australian authorities over the visa row. Australians, and in particular those living in the city of Melbourne where the Australian Open will take place, have had to endure some of the world's strictest and longest lockdowns during the pandemic.
BDST: 1616 HRS, JAN 13, 2022
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