In a stunning upset at the 2026 U.S. Open, Novak Djokovic, the 24‑time Grand Slam champion, was defeated in the first round by Argentina’s Mariano Navone. The match, played at the Billie Jean King National Tennis Center, extended to five sets, with Navone prevailing 7‑6 (5), 5‑7, 4‑6, 6‑2, 6‑1.

Health issues hampered the Serbian star

Djokovic, 39, struggled throughout the contest, committing 10 double faults and 70 unforced errors. After the match, he explained that he had been battling persistent vomiting and severe cramping all season, and that his back and shoulder gave out during the later stages of the match. “It’s something that I’ve been carrying, unfortunately, pretty much every match this year: vomiting, throwing up, a serious issue there,” he said. “Then my whole body starts to collapse, basically cramping and pain. Yeah, the back just gave up in the end and shoulder, and I couldn’t close it out.”

Navone’s breakthrough victory

Navone, 25, described the win as bittersweet, noting that playing against the “GOAT” was both an honor and a challenge. “It was very tough for me because you are playing with the ‘GOAT’ on this court,” he said. “For sure it’s the best thing I’ve had on court. This is an amazing court and the biggest stage. I’m very happy.” The Argentine had previously captured his first ATP title earlier this year in Romania.

Implications for the tournament

The loss marks the first time Djokovic has exited in the opening round of a U.S. Open, despite entering the event as the fourth seed and a three‑time champion at Flushing Meadows. His early departure opens the draw for other contenders and underscores the physical toll that a grueling season can take on even the sport’s most accomplished athletes.

The Associated Press contributed to this report.

Original reporting: Fox News (HLL/CB) — read the source article.