Tokyo: Top-seed Caroline Wozniacki survived a nail-biting scare against Angelique Kerber of Germany at the Pan Pacific Open, advancing to a semi-final showdown against Belinda Bencic.

Caroline Wozniacki. Pic/AFP

However, the tournament’s defending champion and second-seed Ana Ivanovic will not be moving forward after losing 7-6 (7-5), 6-3 to Dominika Cibulkova, who is now set to face Agnieszka Radwanska in the semi-finals.

Wozniacki, the former world number one, clinched a 6-2, 2-6, 6-3 win over Kerber, who has won six of their previous 10 encounters.