Cramped-up Jannik Sinner retires from Shanghai Masters match with Tallon Griekspoor
Tennis Tracker: Anisimova wins China Open, Djokovic through in Shanghai, Sinner retires
Anisimova downs Noskova to win China Open and claim second title of season
Anisimova thrashes Gauff to reach Beijing final, Noskova awaits after stunning Pegula