Serbia's Novak Djokovic poses for photo prior to a press conference in Belgrade, Serbia, May 25, 2020. The world No. 1 tennis player Novak Djokovic announced on Monday an upcoming series of tournaments in the Western Balkans, in which he will participate along with several flashy names from the top of the ATP rankings in order to promote the sport and raise funds for humanitarian organizations. (Photo by Predrag Milosavljevic/Xinhua)
