Agnieszka Radwanska of Poland celebrates after winning the women's singles final against Anastasia Pavlyuchenkova of Russia at the KDB Korea Open tennis championships in Seoul, South Korea, on Sept. 22, 2013. Agnieszka Radwanska won 6-7, 6-3, 6-4 in the final to claim the title of the event. (Xinhua/Park Jin hee)

Agnieszka Radwanska of Poland returns a shot during the women's singles final against Anastasia Pavlyuchenkova of Russia at the KDB Korea Open tennis championships in Seoul, South Korea, on Sept. 22, 2013. Agnieszka Radwanska won 6-7, 6-3, 6-4 in the final to claim the title of the event. (Xinhua/Park Jin hee)

Agnieszka Radwanska of Poland serves during the women's singles final against Anastasia Pavlyuchenkova of Russia at the KDB Korea Open tennis championships in Seoul, South Korea, on Sept. 22, 2013. Agnieszka Radwanska won 6-7, 6-3, 6-4 in the final to claim the title of the event. (Xinhua/Park Jin hee)

Agnieszka Radwanska of Poland kisses the trophy during the awarding ceremony for the KDB Korea Open tennis championships in Seoul, South Korea, on Sept. 22, 2013. Agnieszka Radwanska won 6-7, 6-3, 6-4 in the final to claim the title of the event. (Xinhua/Park Jin hee)

Agnieszka Radwanska of Poland returns a shot during the women's singles final against Anastasia Pavlyuchenkova of Russia at the KDB Korea Open tennis championships in Seoul, South Korea, on Sept. 22, 2013. Agnieszka Radwanska won 6-7, 6-3, 6-4 in the final to claim the title of the event. (Xinhua/Park Jin hee)