Novak Djokovic remains quarantine in an Australian hotel until at least Monday after making a legal bid against deportation.
Djokovic's parents claim their son is being held in "captivity" in Australia, with his mother saying his treatment is "not human".
Djokovic travelled having been granted a medical exemption to defend his Australian Open title without having a mandatory Covid vaccine.
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The world number one had his visa revoked after not sufficiently satisfying authorities over his medical exemption to compete in the Australian Open.
The Serb, who went to Melbourne as defending champion, has not revealed his vaccination status, but has previously spoken out against vaccinations.
