Western & Southern Open: Kostyuk books spot in second round

Ukrainian Marta Kostyuk, the No 15 seed, advanced to the second round of the Western & Southern Open by edging out Belgian Elise Mertens 6-4, 2-6, 6-4 at the Lindner Family Tennis Center in Cincinnati on Tuesday.

Kostyuk, ranked No 21, will face New Zealander qualifier Lulu Sun next.

Cincinnati WTA 1000, other first-round results (Lindner Family Tennis Center, hard, USD 3.211.715, most recent results first):

• Elina Avanesyan vs. Bianca Andreescu
• Peyton Stearns vs. Paula Badosa
• Anna Kalinskaya vs. Katerina Siniakova
• Anastasia Pavlyuchenkova vs. Beatriz Haddad Maia
• Caroline Wozniacki vs. Anhelina Kalinina
• Marie Bouzkova vs. Magdalena Frech
• Leylah Fernandez vs. Yue Yuan
• Diana Shnaider vs. Shuai Zhang
• Caroline Dolehide vs. Taylor Townsend
• Karolina Muchova vs. Dayana Yastremska
• Liudmila Samsonova vs. Xinyu Wang
• Amanda Anisimova vs. Victoria Azarenka
• Emma Navarro vs. Mirra Andreeva
• Elina Svitolina vs. Yafan Wang
• Harriet Dart vs. Yulia Putintseva
• Katie Boulter vs. Magda Linette
• Anastasia Potapova vs. Clara Burel
• Ekaterina Alexandrova vs. Daria Kasatkina
• Robin Montgomery vs. Elisabetta Cocciaretto
• Donna Vekic vs. Ashlyn Krueger: tuesday
• Lulu Sun beat Linda Noskova: 6-4, 7-6 (4)
• Karolina Pliskova beat Viktoriya Tomova: 7-6 (3), 7-6 (3)
• Varvara Gracheva (Q) beat Ajla Tomljanovic: 6-3, 2-6, 7-6 (5)