Defending champion Caroline Wozniacki progressed through to the semi-final of the China Open on Friday as she beat Daria Kasatkina 6-3, 7-6 (7-5).The Russian pushed the 2018 champion in the second set and sent it to a tiebreak - however the 16th seed showed her excellence and closed the match in an hour and 37 minutes. Wozniacki could reach her third final at the China Open, she just has to get past the winner of fourth seed Naomi Osaka and fifth seed Bianca Andreescu