TOKYO: Top two seeds Angelique Kerber of Germany and Denmark’s Caroline Wozniacki roared into the semifinals of the WTA Pan Pacific Open in Tokyo Friday.

Top-seeded Kerber outplayed sixth-seeded Slovakian Dominika Cibulkova 6-3, 6-0 and Wozniacki, a former world No.1, overcame Spain’s Carla Suarez Navarro 6-3, 6-3 in the quarterfinals.

Kerber, 26, ranked eighth in the world, needed just 61 minutes to stop the 13th-ranked Slovakian.

Wozniacki, seeded second and reeling from her loss to top-ranked American Serena Williams in the US Open final two weeks ago, outlasted the Spaniard in a bout of long rallies.

Kerber will meet third-seeded Ana Ivanovic in the round of four on Saturday. The Serbian world No. 10 beat Czech Lucie Safarova 6-3, 6-2 in a quarterfinal.

Wozniacki’s semifinal opponent is another Spaniard — Garbine Muguruza, who outlasted Australian Casey Dellacqua 3-6, 7-6 (7/5), 6-3.

In the doubles semifinals, the top-seeded pair of Cara Black of Zimbabwe and Indian Sania Mirza defeated Serbia’s Jelena Jankovic and Arantxa Parra of Spain 6-3, 6-2.

Black and Mirza, the defending champions, ranked seventh in the world, will face Garbine Muguruza and Carla Suarez Navarro in the final.

The fourth-seeded Spanish pair defeated second-seeded Americans Raquel Kops-Jones and Abigail Spears 6-4, 6-3 in another semifinal.

Radwanska shocked

In Seoul, Varvaro Lepchenko upset world No. 5 Agnieszka Radwanska for the second time in two meetings as she ended the Pole’s title defense in the WTA Korea Open quarter-finals on Friday.

Lepchenko lost an opening-set tiebreaker but she came back with a vengeance to win 6-7 (4/7), 6-2, 6-2 and set up a semifinal against fellow American Christina McHale.

The result means former Wimbledon champion Radwanska, who also lost to Lepchenko in July, is still yet to successfully defend any one of her 14 career titles.

Former Korea Open winner Maria Kirilenko, playing on a wildcard as she pursues her comeback from injury, beat Estonia’s Kaia Kanepi 6-7 (3/7), 6-2, 6-3.

The Russian set up a semifinal against Czech second seed Karolina Pliskova, who beat America’s Nicole Gibbs in straight sets.

Cornet in final

In Guangzhou, Alize Cornet moved a step closer to her second title of the season by defeating Timea Bacsinszky of Switzerland 6-1, 7-6 (5) in the semifinals of Guangzhou Open on Friday.

Cornet, ranked No. 22 and the No. 2 seed at the tournament, fought her way back from 4-1 down in the second set to beat Bacsinszky in just over two hours.

Romanian Monica Niculescu finally ended wild card entry Yafan Wang’s superb run in the tournament with a 6-0, 6-2 victory in the earlier semifinal.

Niculescu, who is yet to drop a set in the event, won six of her eight break points to beat China’s Wang.