Wozniacki book for China Open semi-final

Denmark's Caroline Wozniacki booked her place in the semi-final of the China Open on Friday with an easy victory over the Czech Republics Katerina Siniakova.

The world number 2 beat the qualifier 6-2, 6-3 to advance to her first semi-final since she won at Eastbourne in June, reports Efe.

Wozniacki built her win on her impressive serve, winning a huge 93 per cent of her first serve points during a dominant opening set.

During the second, the Dane only dropped two points on serve, and played efficient, largely error-free tennis, wearing out her opponent who was playing her 12th match in two weeks.