Naomi Osaka Defeats Coco Gauff in Straight Sets in 2019 U.S. Open Rematch

Osaka, a four-time Grand Slam winner, advances onto her first quarterfinal in a major tournament since 2021.

Naomi Osaka, of Japan, returns a shot against Coco Gauff, of the United States, during the fourth round of the US Open tennis championships, in Queens, N.Y., on Monday.Kirsty Wigglesworth / AP

Naomi Osaka is back on familiar ground at Flushing Meadows. The four-time Grand Slam champion outplayed Coco Gauff on Monday night, winning 6-3, 6-2 to advance to …