Australian Open: Novak Djokovic has made other players ‘look like fools’, Stefanos Tsitsipas says

• World No 4 thinks Serbian has put first grand slam of 2022 at risk by travelling to Australia unvaccinated
• ‘He has been playing by his own rules … it takes a lot of daring to do, I don’t think a lot of players would do that,’ Tsitsipas says