ZHENGZHOU, China - Zarina Diyas set up a Zhengzhou quarterfinal meeting with Peng Shuai by sailing past Shiho Akita 6-2, 6-4 and was delighted with her performance.
"I feel really good. It was windy and my opponent played really well today," she said after the match. "I had to fight for every ball. I was trying to play aggressively and it worked."
Meanwhile, Jang Su Jeong had to battle to beat Kurumi Nara 7-5 in the first set but, after the South Korean raced to a 4-0 lead in the second, the World No.98 retired.
She will face No.3 seed Duan Yingying, who came from behind to oust Arina Rodionova 4-6, 6-4, 7-5(5).
Elsewhere, Zheng Saisai was made to work hard to beat Sabina Sharipova 6-2, 4-6, 6-3. She faces Nao Hibino in the last eight.