Novak Djokovic faced a heartbreaking first-round defeat at the US Open, losing to Argentina's Mariano Navone. The match, which marked Djokovic's first opening-round loss at Flushing Meadows and his first first-round exit in a Grand Slam since 2006, ended with scores of 7-6 (7-5), 5-7, 4-6, 6-2, 6-1.

Read More

The 39-year-old Djokovic, a 24-time Grand Slam champion, was visibly emotional during the deciding set, and his physical struggles were evident throughout the match as he dealt with nausea and fatigue, even needing to vomit into a towel.

Seeded fourth, Djokovic initially showed promise by breaking Navone's serve, but his advantage quickly evaporated as the humid conditions took their toll. After winning the second set, he faltered in the subsequent sets, with signs that he was suffering from a lingering health issue that has affected him in oppressive conditions for years.

"I think it was obvious that it was an awful feeling on the court for me," Djokovic remarked after the match, acknowledging Navone's victory while expressing his frustration. "I didn't enjoy myself."

Despite the loss, Djokovic congratulated the 25-year-old Navone on what is considered one of the biggest wins of his career. As he walked back to the locker room, however, he had difficulty containing his emotions and appeared close to tears.

This defeat ended Djokovic's pursuit of a record-breaking 25th Grand Slam singles title, especially notable given that world number one Jannik Sinner was absent due to injury.

Djokovic’s recent performances have raised concerns among fans, particularly his struggle under humid conditions, which he likened to his earlier defeat in Cincinnati. After the match, he referred to a "serious issue" with his health, stating, "It's something that I have been carrying pretty much every match this year - vomiting, throwing up."

Although he had reached at least the semi-finals in six of his last seven Grand Slam appearances, the physical challenges he faced in this match underscored his declining form. With questions surrounding his future in the sport, Djokovic emphasized that he has no plans for retirement yet, stating, "Why would I talk about retirement when I still keep proving to myself that I can still win?"

As speculation about his longevity in tennis continues, Djokovic's focus remains on addressing his health challenges in hopes of making a comeback.