Novak Djokovic experienced a tough start at the US Open, losing in the opening round for the first time. He faced Mariano Navone and was ultimately defeated in 5 sets. Djokovic struggled with physical and internal ailments throughout the match, compounding his difficulties with a series of mistakes.

Despite his efforts, Djokovic could not overcome his challenges to secure a win. The loss marks a notable upset in the tournament.

Further details about the match are available from the source, providing more insight into Djokovic's performance and the outcome of the game.