Englishwoman Emma Raducanu, the No 30 seed, won against Serb Olga Danilovic 6-3, 6-2 to reach the 32 of the Cincinnati Open at the Lindner Family Tennis Center on Saturday.
Raducanu, ranked No 33, will face the winner of the match between Belarusian Aryna Sabalenka, the top seed, and Czech Marketa Vondrousova next.
In the previous round of the Cincinnati tournament, Danilovic, ranked No 40, beat Englishwoman Katie Boulter (6-0, 7-5).
Cincinnati WTA 1000, other 64 results (Lindner Family Tennis Center, hard, USD 5.152.599, most recent results first):
Caroline Garcia vs. Karolina Muchova
Barbora Krejcikova vs. Elina Svitolina
Linda Noskova vs. Iva Jovic
Sofia Kenin vs. Varvara Gracheva
Catherine McNally vs. McCartney Kessler
Daria Kasatkina vs. Lucia Bronzetti
Kimberly Birrell vs. Jessica Pegula
Camila Osorio vs. Jelena Ostapenko
Xinyu Wang vs. Coco Gauff
Magda Linette vs. Rebecca Sramkova
Clara Tauson vs. Ajla Tomljanovic
Emma Navarro vs. Ella Seidel
Dayana Yastremska vs. Viktoriya Tomova
Anastasija Sevastova vs. Ashlyn Krueger
Jasmine Paolini vs. Maria Sakkari
Veronika Kudermetova vs. Belinda Bencic
Leolia Jeanjean vs. Amanda Anisimova
Aryna Sabalenka vs. Marketa Vondrousova
Anna Kalinskaya vs. Peyton Stearns
Clervie Ngounoue vs. Elise Mertens
Elena Rybakina vs. Renata Zarazua: saturday
Yue Yuan vs. Diana Shnaider: saturday
Ekaterina Alexandrova vs. Lulu Sun: saturday
Taylor Townsend (WC) beat Liudmila Samsonova (13): 6-2, 6-4
Maya Joint vs. Beatriz Haddad Maia: saturday
Madison Keys (6) beat Eva Lys: 1-6, 6-3, 7-6 (1)
Sorana Cirstea beat Magdalena Frech (22): 7-6 (4), 2-6, 6-4
Jessica Bouzas Maneiro beat Leylah Fernandez (21): 6-3, 6-3
Marta Kostyuk (25) beat Tatjana Maria: 6-0, 6-1
Iga Swiatek (3) beat Anastasia Potapova: 6-1, 6-4
Aoi Ito (Q) beat Anastasia Pavlyuchenkova (27): 6-1, 4-6, 6-4