Naomi Osaka defeats Coco Gauff at the U.S. Open in 2019 rematch

Naomi Osaka eliminated Coco Gauff 6-3, 6-2 at the U.S. Open with a far more confident and consistent brand of tennis Monday to reach her first Grand Slam quarterfinal in more than 4 1/2 years. The No. 23-seeded Osaka was better throughout than No. 3 Gauff, whose repeated mistakes really made the difference in Arthur Ashe Stadium. “I was super locked in, to be honest. I was really locked in," said Osaka, a 27-year-old who w