So much has happened for Naomi Osaka — in tennis, away from tennis — since she first played Coco Gauff at the U.S. Open back in 2019.

Six summers ago, Naomi Osaka and Coco Gauff shared a unique moment in the third round of the U.S. Open. Gauff, 15 at the time, had just lost her Arthur Ashe Stadium debut to Osaka, the reigning ...