Complex sentence: She made another two quarterfinals at Toray Pan Pacific Open and Wuhan Open, losing to Agnieszka Radwańska and Roberta Vinci respectively, but lost in the first round of China Open to Sloane Stephens in straight sets.
Split into simpler sentences: She made another two quarterfinals at Toray Pan Pacific Open and Wuhan Open, losing to Agnieszka Radwańska and Roberta Vinci respectively. She lost in the first round of China Open losing to Sloane Stephens in straight sets.