Djokovic Details Yearlong Health Issues After 5-Set US Open Loss to Navone

Q: After a dramatic physical collapse, what undisclosed chronic illness might finally force the 39-year-old tennis legend into permanent retirement?

It is not publicly known. Djokovic has disclosed only that he has been dealing with a chronic health condition for “the past couple of years” that causes major problems “especially when it is humid and it is hot,” but he has not named the illness. What is clear from his own comments and the recent evidence is that the condition appears to be severe enough to affect his ability to finish long matches in extreme conditions. In Cincinnati and again at the US Open, he was seen vomiting, cramping, and struggling physically before saying his body had “started to collapse.” That has intensified questions about whether his body can still withstand best-of-five-set Grand Slam tennis at 39. Outside observers have raised possibilities, but no verified diagnosis exists. Former coach Paul Annacone openly asked, “If it’s a chronic illness, what is it?” while Patrick McEnroe suggested it may have looked like a virus worsened by heat, though that was speculation rather than reporting. So the undisclosed illness that might force retirement remains exactly that: undisclosed. The strongest reported takeaway is not the name of the condition, but its apparent impact. Djokovic’s own remarks suggest it is longstanding, heat-sensitive, and increasingly disruptive, making retirement a more realistic possibility if it cannot be managed.

3 articles · Updated · Bleacher Report · Aug 31

Novak Djokovic said vomiting, cramping and pain have hit him "pretty much every match this year" after his five-set first-round US Open loss to Mariano Navone.
The 39-year-old said his body began to "collapse" during the match, with his back and shoulder giving out; he appeared to vomit multiple times and took a medical timeout before the fifth set.
Navone closed out the upset 7-6(5), 5-7, 4-6, 6-2, 6-1 after Djokovic said he had struggled physically from the fourth game and could not keep fluids down.
The defeat deepens a difficult 2026 season in which Djokovic is on track for his first titleless year since 2005, after another opening-match loss in Cincinnati earlier this month.
His comments also sharpen retirement questions after he said following Cincinnati that a return in 2027 to that event looked unlikely.

Sources

Bleacher Report1h ago

Novak Djokovic Loses US Open Match to Mariano Navone Amid Recurring Health Issues

The New York Times9h ago

Novak Djokovic Suffers Physical Collapse, Loses U.S. Open First Round to Navone

The Sunday Guardian10h ago

WATCH: Novak Djokovic Vomits Courtside In 3rd Set Against Mariano Navone During US Open 2026 First

12 Sources

After a dramatic physical collapse, what undisclosed chronic illness might finally force the 39-year-old tennis legend into permanent retirement?

Could this grueling five-set defeat spark a radical overhaul of Grand Slam rules to protect aging athletes from extreme heat?

With top rivals sidelined, did a golden opportunity slip away, or is this historic first-round exit the definitive end of an era?

Novak Djokovic’s Historic First-Round US Open Exit: Match Analysis, End of an Era, and Mariano Navone’s Breakthrough Upset (2026)

Overview

Novak Djokovic’s shocking first-round defeat at the 2026 US Open was driven by physical exhaustion and severe cramps, as Mariano Navone dragged him into long, grueling rallies on a humid night. Djokovic’s ongoing health issues in hot conditions contributed to his collapse, ending his historic streak and creating a power vacuum in the men’s draw. With Jannik Sinner sidelined, new favorites like Alexander Zverev emerged, while Navone’s breakthrough victory inspired renewed belief in Argentine tennis. The global tennis community reacted with disbelief, questioning if this marked the end of Djokovic’s legendary career.

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