Naomi Osaka defeated Daria Kasatkina 6–0, 4–6, 6–3 in the second round of the US Open on hard court, confirming her status as pre-match favourite despite Kasatkina's opening-set dominance. Osaka's commanding first set suggested a straightforward victory, but Kasatkina responded competitively in the second, forcing a decider. The Japanese former champion regained control in the third set to seal progression. The result underlines Osaka's solid form at Flushing Meadows, though the mid-match wobble hints at inconsistency that could prove costly against stronger opposition in subsequent rounds.