Fifth seed Alexander Zverev defeated Borna Coric in four sets to reach the US Open semi-finals on Tuesday.
After pulling out of the US Open, Nick Kyrgios has said that there is a very "slim chance" of him playing in this year's French Open.
Nick Kyrgios hit back at Borna Coric after the latter said he did not care about what Kyrgios' criticism.
Alexander Zverev was heavily criticised after viral footage emerged of him partying in a busy bar despite pledging to "follow self-isolating guidelines" after playing in Novak Djokovic's coronavirus-hit Adria Tour.
Novak Djokovic has been criticised for hosting the exhibition tournament that has led to a slew of players testing positive for coronavirus, including himself.
Viktor Troicki became the third tennis player from Novak Djokovic's Adria Tour tennis tournament to test positive for coronavirus.
Novak Djokovic came under extreme criticism after two players tested positive after playing an exhibition tennis tournament.
Croatian tennis player Borna Coric has tested positive for coronavirus a day after Grigor Dimitrovs positive test led to the cancellation of the Adria Tour final.
Novak Djokovic has now been victorious in 18 ATP matches in a row and in recent months won Wimbledon, the Cincinnati Masters, the US Open and now Shanghai for a fourth time.
Novak Djokovic and Borna Coric kept fans on the edge of their seats with an incredible rally during the first set.