Top seed Agnieszka Radwanska of Poland overpowered Russia’s Vera Dushevina 6-2 6-0 to secure a semi-final berth at the Korea Open on Friday.

The world number four will meet Spain’s Lara Arruabarrena, who broke local hearts by ending the run of wildcard entry Jang Su-Jeong 6-0 6-4.

The third quarter-final also saw the end of an impressive run by veteran Kimiko Date-Krumm of Japan, who will celebrate her 43rd birthday later this month.

Krumm, who had claimed the scalp of second-seed Maria Kirilenko to reach the quarter-final stage, took that form into her match with Italy’s Francesca Schiavone, winning the first set 6-4.

But the former French Open champion hit back to take the next two sets 6-4 6-4.

“It was very tough,” Schiavone said. “Date was really strong and she deserved to win the first set, but fortunately I managed to get back in the match.”

The Italian will meet third seed Anastasia Pavlyuchenkova in the semis after the Russian comfortably saw off Irina-Camelia Begu of Romania 6-2 6-2.