World No 1 tennis star Novak Djokovic is “Prisoner Cell Djock H” says the Metro – as he continues to be held at a Melbourne quarantine hotel. The Serbian was held after his plea for a medical exemption from Covid vaccination was denied by Australia ahead of the Australian Open. The paper reports Serbian President Aleksandar Vucic is claiming the incident is a plot to stop Djokovic winning his 21st Grand Slam there, and overtaking Roger Federer and Rafael Nadal in the record books.