NEW YORK (AP) —

For the first time at this U.S. Open, Coco Gauff didn't double-fault in her first service game. And for the first time, she didn't get broken to begin things, either.

Related video above: Coco Gauff reflects on her rise to tennis stardom (2023)

With her work-in-progress serve looking the best it has so far in this trip to Flushing Meadows, the No. 3-seeded Gauff turned in by far her most solid — and stress-free — performance Saturday, defeating No. 28 Magdalena Frech of Poland 6-3, 6-1 to reach the fourth round of a tournament she won in 2023.

"It's been like an emotional week … but I think I needed those tough moments to move forward," said Gauff, who will face four-time major champion Naomi Osaka on Monday for a berth in the quarterfinals. "I was putting too much pres

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