Tennis player Novak Djokovic wears a wooden cross and is known for praying during his matches. He received a visa to visit Australia on 18 November and arrived in Melbourne on 5 January with a Covid exemption approved by Tennis Australia's chief medical officer and a Victorian government independent expert panel. Novak belongs to the Serbian Orthodox church and on 7 January (the Orthodox Christmas Day) he was held in detention for an invalid visa while lawyers fought for his freedom. Three days later a judge ruled he could remain in Australia. Djokovic wants to play in the Australian Open, which begins on 17 January: if he won he would become the most successful men's player in history. However, Australia's immigration minister insists his recent Covid infection does not exempt him from vaccine requirements and could still deport him. He admitted that there were mistakes on his immigration forms and that he had met a journalist after testing positive for Covid.