Nick Kyrgios aimed another dig at Novak Djokovic as he confirmed he will not take part in the US Open due to coronavirus concerns.
The outspoken Australian has been highly critical of men's No.1 Djokovic for his behaviour during the Adria Tour earlier this summer.
The Serb arranged the tournament - which allowed full crowd attendance - and was seen clearly flouting social distancing rules in a nightclub with other participants.
Many players including Djokovic went on to test positive for COVID-19 and the tour ended up being cancelled. Meanwhile, the US Open is the first grand slam event to take place since lockdown began and is set for a 31 August start.
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