Naomi Osaka v. Karolina Muchová 2025 US Open Quarterfinal Match Point Tennis Ball | 2nd Set

Presented in this lot is the match point ball used in the 2nd set of the quarterfinal match featuring Naomi Osaka and Karolina Muchová at Arthur Ashe Stadium on September 3, 2025.

In a straight‑set victory, Osaka triumphed with a final score of 6‑4, 7‑6 (3), marking her return to the US Open semifinals and extending her unblemished record in Grand Slam quarterfinals and beyond. This ball was the decisive clinching ball used to seal the match and secure her place in the semifinals.

The ball was secured on-site and authenticated by a Sotheby’s representative immediately following the match.