Novak Djokovic Upset in First Round of 2026 US Open by Mariano Navone

In a stunning upset at the 2026 US Open, Novak Djokovic, the No. 4 seed and four-time champion, lost to Mariano Navone in a five-set match at Arthur Ashe Stadium on Sunday night.

The match ended with scores of 7-6, 5-7, 4-6, 6-2, and 6-1, as Djokovic appeared to struggle with illness, particularly in the later sets. This defeat marks the first time since 2006 that Djokovic has lost in the first round of a Grand Slam event, ending his streak of 78 consecutive first-round victories.

Navone capitalized on Djokovic's difficulties, benefiting from 70 unforced errors made by the veteran player, including 29 in the final two sets. This victory is a significant milestone for the 25-year-old Argentinian, who will advance to the second round for the second year in a row. Djokovic's loss also opens up the men's draw, potentially benefiting American players in the tournament.