Korea Open: Yuan through to last eight after Juvan retirement

Chinese Yue Yuan advanced to the quarter-finals of the Korea Open when Slovenian Kaja Juvan retired on Wednesday.

Yuan, ranked No 128, led 6-4, 4-1 when Juvan, ranked No 99, pulled out.

The Chinese will face the winner of the match between German Eva Lys and No 4 seed Marie Bouzkova next.

Yue Yuan won against Dutch qualifier Arianne Hartono (6-1, 6-2) in the previous round of the Seoul tournament.

During the first round of the Seoul tournament, the 22-year-old Slovenian beat No 8 seed Katie Boulter (6-4, 6-4).

Korea WTA 250, other second-round results:

• Jessica Pegula vs. Ashlyn Krueger
• Kimberly Birrell vs. Dayeon Back
• Su Jeong Jang vs. Emina Bektas
• Eva Lys vs. Marie Bouzkova
• Yanina Wickmayer beat Ekaterina Alexandrova (3): 6-3, 7-6 (6)
• Polina Kudermetova beat Kathinka von Deichmann: 6-3, 6-1
• Claire Liu beat Arantxa Rus (7): 1-6, 6-3, 3-0 ret.