Nick Kyrgios fires back at Borna Coric: 'Do you have rocks in your head?'

He has ignited a war of words with Borna Coric after accusing the Croatian of having zero intellect after his passionate defense of the Adria Tour.

World No 40 Kyrgios has expressed disapproval of the "dumb" decision to organize the Adria Tour during the coronavirus pandemic.

Four players, including Coric and world number one Novak Djokovic, tested positive for Covid-19 during the exhibition tournament in the Balkan region.

There have been many round-trip riots and Coric was the last to hit Kyrgios, saying he is not interested in the "lessons" of the 25-year-old.