Novak Djokovic is under fire for partying topless just days before his tennis tourney had a small coronavirus outbreak ... with one of Joker's peers calling the whole thing a "poor example."
Here's the deal ... the world's #1 ranked tennis player hosted a tournament in Croatia over the weekend but it was canceled before the final match because two of the tournament's stars contracted COVID-19.
As it turns out, one of the two guys who tested positive -- Grigor Dimitrov -- had been partying with Djokovic and several other famous tennis players at a Croatian hot spot just days before.