Happy days again for Kiki Bertens.
Kiki Bertens still on course to defend her title in Russia.
Swiss star still climbing rankings.
World number eight in imperious form.
Dutchwoman on the board in Shenzhen.
Dutchwoman dominant in China.
It's all going according to plan for Bianca Andreescu.
American battles back from brink.
Dutch star reveals days of 'soul-searching'.