After his first-round win at the US Open 2025, Novak Djokovic delighted fans by signing autographs, then hilariously signed a bald fan's head on request. The light-hearted moment, caught on camera, saw Djokovic smiling as he autographed the man's scalp, sending the crowd into laughter. The wholesome clip quickly went viral, showcasing Djokovic's fun-loving side off the court.