Aug. 27 (UPI) -- Coco Gauff's revamped serve disposed slower deliveries, but supreme athleticism and bustling backhands helped her survive her first foe at the 2025 U.S. Open.

Gauff needed nearly three hours to earn the 6-4, 6-7(2), 7-5 victory over Ajla Tomljanovic of Australia on Tuesday in Flushing, N.Y. It was her first victory at a major since winning the 2025 French Open before losing in the first round of Wimbledon 2025.

"That match was what it was," Gauff told reporters. "I'm so used to these long battles."

Gauff, who led the WTA Tour with 430 double faults last season and owns the most (320) this season, said she had tough practice sessions this week, with her shoulder hurting from so many repetitions of her serve.

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