No. 1 seed Caroline Wozniacki of Denmark breezed to the singles semifinals of the KDB Korea Open Tennis Championship in Seoul on Friday.

The Dane overwhelmed Klara Zakopalova of the Czech Republic 6-2, 6-3 in the third round of the annual Women’s Tennis Association tournament on the Olympic Park Tennis Stadium in Seoul.

Wozniacki led the game through her powerful and stable groundstrokes, Zakopalova made unforced errors at crucial points depite good winners.

It took her one hour and 15 minutes to send seventh-seeded Zakopalova back home. Wozniacki is world No. 11, the highest ranked among the field this year, while Zakopalova is world No. 28 and 2010 Korea Open singles runner-up.

"I hit the ball well and we had some good rallies. Klara is also hitting the ball very strong," Wozniacki told reporters after the match. "She is playing very flat and fast. So I had to be low on my legs."

Wozniacki is to clash Ekaterina Makarova of Russia in the semifinals Saturday. Eighth-seeded Makarova, ranked 29th in the WTA standings, edged out world No. 93 and defending champion Maria Jose Martinez Sanchez of Spain, 6-1, 6-1 in just 56 minutes.

The Korea Open started in 2004, and the total budget was raised from $220,000 to $500,000 this year.

By Chun Sung-woo (swchun@heraldcorp.com)