Western & Southern Open: Kostyuk books spot in second round
Marta Kostyuk edged out Elise Mertens 6-4, 2-6, 6-4 on Tuesday evening. She’ll face New Zealander qualifier Lulu Sun in the next 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)