SEOUL, South Korea (AP)—Top-seeded Agnieszka Radwanska advanced to the second round of the Korea Open by beating Alexandra Cadantu 6-4, 6-0 Tuesday.

Second-seeded Maria Kirilenko, eighth-seeded Annika Beck and unseeded Kimiko Date-Krumm also advanced, but two other seeded players lost early.

No. 4 Klara Zakopalova lost to 18-year-old wild-card entrant Su Jeong Jang 6-3, 6-1, and seventh-seeded Andrea Petkovic lost to Francesca Schiavone 6-1, 2-6, 6-4.