TOPSHOT - Austrian tennis player Dominic Thiem (front) serves to Serbian tennis player Filip Krajinovic during the final at the Adria Tour, Novak Djokovic's Balkans charity tennis tournament in Belgrade on June 14, 2020. - The ATP and WTA Tours have been suspended since March due to the COVID-19 pandemic and will not resume at least until the end of July 2020. (Photo by Andrej ISAKOVIC / AFP)