Karolina Muchova beat Naomi Osaka 7 to 5, 1 to 6, 7 to 6 on her ninth match pointtoday to reach the China Open quarterfinals. The deciding tiebreak ended 9 to 7 after nearly three hours in Beijing. A lead that vanished in one game Osaka, a former world No. 1 now ranked 17th, built […]

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