Djokovic's lawyers have reached a hearing in a Melbourne court on Monday after the Serb's visa was annulled by customs.
He is now forced to stay supervised in a quarantine hotel until the hearing in court.
Djokovic arrived in Melbourne on Wednesday.
Home Secretary Karen Andrews has confirmed that Australian border authorities are examining the visas of two other players who applied for the same exemption as Djokovic and stressing that Djokovic has full freedom - should he want to leave the country.
- Mr Djokovic is not being held in Australia.
He can leave whenever he wants if he chooses to do so and the border force will actually facilitate it, she says according to ABC News.
According to Reuters, a third player has also arrived in Australia with a medical exception confirmed by the Australian Tennis Association and the state of Victoria, to which Melbourne belongs.
Players' union: "Djokovic has assured his well-being"
In addition, there will be medical exemptions approved for people coming to Australia next week.
According to Australian Open competition leader Craig Tiley, who is also chairman of the Australian Tennis Association, 26 applications have been received for medical exemptions and a "handful" must have been approved.
Djokovic had had his application approved by the state of Victoria and the Australian Open before it became big politics.
The Australian government trumped the state's decision.
The professional players' union, PTPA, has been in contact with Djokovic, who has not spoken since he landed in Melbourne.
- Djokovic has assured his well-being for us.
He has also asked that we let him share his experiences for the time he will be in custody when it eventually suits, says PTPA in a statement.
Protesters both for and against Djokovic have gathered outside his hotel, which has strong police surveillance at the entrance.