No, it was not the tennis court as expected. The participants, led by tournament founder Novak Djokovic, engaged in a game of basketball. Although the team line-ups were not disclosed, it was revealed that Alexander Zverev had the most slam dunks. This comes as no surprise, as the German stands at 1.98m and should have little difficulty dunking the basketball.

Bulgarian Grigor Dimitrov was labeled the "greatest fighter" while Croat Borna Coric was deemed the "best assistant" on the court. Regardless of their basketball prowess, the superstars seemed to enjoy themselves as they warmed up for the second leg of the event. Austrian Dominic Thiem won the first leg in Belgrade, but will be competing at the Ultimate Tennis Showdown this weekend.

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