Korea Open: Kostyuk books spot in second round

Ukrainian Marta Kostyuk, the No 5 seed, won against Dutchwoman Arantxa Rus 6-3, 6-1 to advance to the second round of the Korea Open at the Olympic Park Tennis Center in Seoul on Monday.

Kostyuk, ranked No 18, will play qualifier Heather Watson next.

Seoul WTA 500, other first-round results (Olympic Park Tennis Center, hard, USD 922.573, most recent results first):

• Ajla Tomljanovic vs. Su Jeong Jang
• Peyton Stearns vs. Emma Raducanu
• Tatjana Maria vs. Viktoriya Tomova
• Sloane Stephens vs. Hailey Baptiste
• Yulia Putintseva vs. Amanda Anisimova
• Polina Kudermetova vs. Priscilla Hon
• Ekaterina Alexandrova (7) beat Varvara Lepchenko (Q): 7-5, 3-6, 6-0
• Carol Zhao (Q) beat Dayeon Back (WC): 6-4, 6-1
• Heather Watson beat Jia-Jing Lu (Q): 6-4, 6-4
• Veronika Kudermetova beat Shuai Zhang: 6-4, 6-3
• Yue Yuan (8) beat Elena-Gabriela Ruse (Q): 4-6, 6-2, 6-2