In a statement following his diagnosis, Djokovic apologised for holding the tournament, saying: "I am extremely sorry for each individual case of infection, I hope that it will not complicate anyone's health situation and that everyone will be fine."
And Ivanisevic put forward a staunch defence of his player.
"Everybody is smart now, and they are attacking Novak. He tried to do a great thing, a humanitarian thing. We were locked down for three months. He organized this tour," Ivanisevic told the New York Times as he defended Djokovic.
The players came in Belgrade and we had good tennis and a good atmosphere. Everything in Serbia and everything in Croatia was done with the recommendations by the government.
Videos of Djokovic and other players at a nightclub circulated on social media but Ivanisevic spoke of individual responsibility.
"OK, maybe you didn’t need this,” he said. "But they are all individuals. Nobody forced anybody to come into that club. Nobody forced anybody to dance. Nobody can tell you to go on the stage, take your shirt off and dance.
“And how do you know anyone even got infected at that party?”
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