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.