Benjamin Bonzi defeated Daniil Medvedev 6–3, 7–5, 6–7, 0–6, 6–4 in the first round of the US Open on hard court, pulling off a significant upset against the pre-match favourite. Medvedev entered as the clear favourite at 1.23 odds, while Bonzi was priced at 4.57, yet the Frenchman proved capable of sustaining pressure across five sets. After taking the opening two sets comfortably and edging a third-set tiebreak, Medvedev responded with a dominant fourth set to force a decider. Bonzi regrouped in the fifth, however, converting his opportunities to secure victory and advance past one of the tour's top players. The result represents a notable scalp for Bonzi and raises questions about Medvedev's early-round consistency at the year's final Grand Slam.