KK57 New York - Nemecký tenista Alexander Zverev počas tréningu s Novakom Djokovičom zo Srbska na grandslamovom turnaji US Open vo Washingtone 26. augusta 2026. FOTO TASR/AP Alexander Zverev, of Germany, returns the ball to Novak Djokovic, of Serbia, during a practice at the U.S. Open tennis championships Wednesday, Aug. 26, 2026, in New York. (AP Photo/Frank Franklin II)