'I didn't adjust': Djokovic dumped out of Shanghai at first hurdle by Hurkacz
Home hero Zheng powers into Beijing semis before Mertens stuns Swiatek
Andreeva out to halt Bartunkova's fairytale run as Mertens faces Zheng in Beijing semis
Tennis Tracker: Mertens stuns Swiatek in Beijing quarters, Djokovic beaten by Hurkacz
