Naomi Osaka, of Japan, reacts to a pont against Daria Kasatkina, of Australia, during the third round of the U.S. Open tennis championships, Saturday, Aug. 30, 2025, in New York. (AP Photo/Heather Khalifa)

NEW YORK — Coco Gauff and Naomi Osaka set up a high-profile showdown between two past title winners in the U.S. Open’s fourth round with victories Saturday.

“Everyone will be watching,” Venus Williams said. “That’s what tennis needs.”

Their meeting on Monday, with a quarterfinal berth at stake, is a rematch from 2019, when Gauff was a 15-year-old making her main-draw debut at Flushing Meadows and Osaka was the reigning champion.

Osaka won that one in straight sets, then consoled a teary Gauff on the sideline and encouraged her to speak to an Arthur Ashe Stadium crowd that was pulling

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