Sloane Stephens, of the United States, returns a shot to...

Sloane Stephens, of the United States, returns a shot to Clara Burel, of France, during a first round match of the U.S. Open tennis championships, Monday, Aug. 26, 2024, in New York. Credit: AP/Matt Rourke

GUADALAJARA, Mexico — Olivia Gadecki upset 2017 U.S. Open champion Sloane Stephens 6-4, 6-3 on Monday to move into a second-round contest against second-seeded Danielle Collins at the WTA Guadalajara Open.

Seventh-seeded Viktoria Kudermetova beat Sachia Vickery 6-4, 6-4 and advanced to meet Camila Osorio, the 22—year-old Colombian who eased past Hailey Baptiste 6-3, 6-2.

Local favorite Renata Zarazua had a 6-1, 3-6, 6-1 win over Anhelina Kalinina, and Kamilla Rakhimova advanced to face No. 3 seed Victoria Azarenka with a 7-5, 6-0 victory over Aleksandra Kunic.

Top seed Jelena Ostapenko, who is coming off a U.S. Open doubles title victory with Lyudmyla Kichenok following her first-round loss to Naomi Osaka in the singles draw, won't play until Wednesday.

The Guadalajara Open is a hardcourt 500-level event on the WTA Tour this season and is being played at the Complejo Panamericano de Tenis.

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