Agnieszka Radwanska advances to Korea Open quarterfinalsAuthor:SI StaffPublish date:Sep 19, 2013Top seed Agnieszka Radwanska defeated Estrella Cabeza Candela 6-2, 6-1 in Seoul.Chung Sung-Jun/Getty Images Copyright 2014 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.