Zheng moves into last four of WTA Finals

Olympic champion Zheng Qinwen in action. — AFP/FileRIYADH: Zheng Qinwen continued to deliver in her breakthrough season as she advanced to the semi-finals of the WTA Finals in Riyadh on Wednesday with victory over Wimbledon finalist Jasmine Paolini.Picking up a 30th win from her last 35…