Breaking: Novak Djokovic admits breaking isolation while Covid positive

He said his agent had made a mistake when filling in a section of the form that covered his recent travel history. The form stated that he had not travelled in the 14 days before his arrival in Australia.

But recent reports suggest the 34-year-old had travelled to Serbia and then to Spain prior to the trip.

“My agent sincerely apologises for the administrative mistake in ticking the incorrect box,” he wrote. “This was a human error and certainly not deliberate.”

“My team has provided additional information to the Australian government to clarify this matter,” he added.

Australia’s Border Force, the nation’s immigration officials, said on Tuesday they were investigating whether he had made a “false declaration” – which would be grounds for a visa cancellation.

This year’s Australian Open begins on 17 January and if Djokovic wins, he will become the most successful men’s player in history.

The men’s professional tennis tour has called for more clarity of the rules to enter Australia and urged players to get vaccinated.

“The series of events leading to Monday’s court hearing have been damaging on all fronts, including for Novak’s well-being and preparation for the Australian Open,” the ATP said.