Novak Djokovic lost in the first round of the 2026 U.S. Open to unseeded Argentine Mariano Navone on Monday [1, 2].
The defeat marks a rare early exit for Djokovic, who has not lost in the first round of a Grand Slam since 2006 [5].
The match took place at Arthur Ashe Stadium in New York [1, 2]. Navone secured the victory with a final score of 7-6, 5-7, 4-6, 6-2, 6-1 [1].
Djokovic struggled throughout the contest due to stomach illness [3, 4]. This health issue hampered his performance as the match progressed into the final sets, where Navone took control of the momentum [3].
While the loss was attributed to physical distress, the result remains a shock given Djokovic's historical dominance in the early stages of major tournaments [1, 2]. The Argentine player capitalized on the situation to advance in the men's singles draw [1].
This is the first time in two decades that Djokovic has lost a major tournament in its opening round [5]. The five-set battle highlighted a significant dip in the veteran's usual resilience, though the stomach trouble provided a physical explanation for the result [3, 4].
“Novak Djokovic lost in the first round of the 2026 US Open to unseeded Argentine Mariano Navone.”
This result disrupts the typical trajectory of the US Open men's draw and underscores the vulnerability of aging legends to sudden health setbacks. A first-round exit for a player of Djokovic's caliber is a statistical anomaly that opens the field for lower-seeded players and shifts the betting and seeding dynamics for the remainder of the tournament.



