Agnieszka Radwanska began her quest for a second Korea Open title with a 6-4, 7-5 win over Bethanie Mattek-Sands to complete her 14th victory in 27 WTA matches this season. Radwanska, who reached the Wimbledon final in 2012 and won the Korea Open the following year, came back from a break down in both sets against the American, whose game spiralled out of control whenever she gained the lead.
Radwanska will meet Irina-Camelia Begu or Mona Barthel Also, fourth-seeded Magdalena Rybarikova retired with an injury while trailing Mandy Minella 6-3 3-2. The Slovak, the highest-ranked opponent Minella has beaten this year, held her back in the opening stages, looked frustrated with herself all afternoon and surrendered to her third retirement of the year.
Minella will face for the first time Priscilla Hon, who completed the 11th overall third-set win as she came back for the seventh time after losing the first set. The Australian beat local wild-card Su Jeong Jang 36 62 62. No.5 seed Alison Van Uytvanck came to within two points of victory, served for the match but went on to suffer the fifth straight defeat throwing her racquet into the net upon losing.
Ajla Tomljanovic came back for the tenth time to win 3-6 7-5 7-5 and will now bid to beat Tamara Zidansek for the first time after losing to the Slovene in straight sets in Bol earlier this year. No.6 seed Hsieh Su-wei beat Jil Teichmann 2-6 6-1 7-6 (0) after saving two match points in the third set.
The Taiwanese, on a 6-match winning streak, extended to 7-9 her win-loss record in final set tiebreaks as she completed the 14th third-set victory of the season. Hsieh will face Stefanie Voegele, who leads 2-0 their head to head record.