AUCKLAND, NEW ZEALAND - JANUARY 04: Agnieszka Radwanska of Poland plays a backhand in her semifinal match against Jamie Hampton of the USA during day five of the 2013 ASB Classic at the ASB Arena on January 4, 2013 in Auckland, New Zealand. (Photo by Phil Walter/Getty Images)

Auckland, New Zealand – World No. 4 Agnieszka Radwanska was taken to tiebreaks in both sets by unheralded American Jamie Hampton before edging her way into the final of the ASB Tennis Classic.

Top-seeded Radwanska had dropped only 10 games on her way to Friday's semifinal, sweeping her first three matches in straight sets, but was fully taxed by the 71st-ranked Hampton before winning 7-6 (4), 7-6 (3).

Poland's Radwanska will now face third-seeded former champion Yanina Wickmayer in Saturday's final. Wickmayer reached her third singles final in Auckland when she beat eighth-seeded German Mona Barthel 6-4, 1-6, 7-6 (3). – Sapa-AP