NEW YORK (AP) — 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 was born in Japan and moved to the U.S. with her family at age 3. "I felt like everyone wanted to watch a really great match, and I hope that’s what you got.”

From her side, it certainly was. Osaka displayed the demeanor — and, importantly, the big serve and booming strokes — that have carried her to four major championships, all on hard courts. That inc

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