SEOUL, Sept. 28 (Xinhua) -- Wimbledon champion Venus Williams Friday beat Marta Domachowska of Poland 6-2, 6-3 to reach the semifinals of South Korea Open.

The top-seeded American used powerful and accurate returns but still trailed 3-1 in the second set before winning five straight games.

Williams will face Flavia Pennetta in the semifinals. The Italian defeated Ayumi Morita of Japan 6-1, 6-2.

Second-seeded Agnes Szavay of Hungary retired with an injury after splitting the first two sets with Eleni Daniilidou 4-6, 7-5.

The fifth-seeded Greek will next play fourth-seeded MariaKirilenko, who beat Catalina Castano of Colombia 6-3, 6-0.