Frenchman Benjamin Bonzi eliminated No. 13 seed and former champion Daniil Medvedev in a five-set thriller at the US Open, prevailing 6-3, 7-5, 6-7 (5), 0-6, 6-4 in the opening round on Louis Armstrong Stadium. The match turned on an unusual six-minute interruption late in the third set, when a photographer stepped onto the court between Bonzi’s first and second serves while the Frenchman held match point. Chair umpire Greg Allensworth ordered a replay of the first serve, prompting a furious protest from Medvedev, who appealed to the crowd and castigated the official. Medvedev saved the match point, captured the set in a tiebreak and swept the fourth 6-0 before Bonzi steadied to close out the decider. Medvedev smashed his racquet after the defeat and later said he expected to be fined, insisting his anger was directed at the umpire’s decision rather than the photographer. Bonzi acknowledged the delay made it “so difficult to play” but thanked the crowd for its energy as he advanced to face Marcos Giron in round two. Earlier on the same court, American Ben Shelton eased past Peruvian qualifier Ignacio Buse 6-3, 6-2, 6-4. The 21-year-old, who arrived in New York fresh from his maiden Masters title in Toronto, improved to 16-0 in his major career when winning the first two sets.