MIAMI, March 23 (Xinhua) -- China's Jiang Xinyu and Chinese Taipei's Wu Fang-Hsien progressed to the women's doubles quarterfinals at the Miami Open on Sunday after only four games of their match against Ashlyn Krueger and Jessica Pegula.
The American pair led 3-1 in the first set of their round-of-16 duel when an injury forced them to retire after just 13 minutes.
Jiang and Wu will meet either Wang Xinyu and Zheng Saisai or Danielle Collins and Desirae Krawczyk for a place in the semifinals on Friday.
Earlier, China's Zhang Shuai and Elise Mertens of Belgium cruised into the quarterfinals with a 6-3, 6-1 victory over Luisa Stefani of Brazil and Hungary's Timea Babos.
Seventh seeded pair Zhang and Mertens won 76% of their points on first serve and converted five of nine break points.
Stefani and Babos saved four of nine break points but managed to win just 52% of their first-service points.
Zhang and Mertens will meet Japan's Miyu Kato and Spaniard Cristina Bucsa on Thursday for a place in the semifinals.
Kato and Bucsa advanced by beating Italian pair Jasmine Paolini and Sara Errani 7-6(4), 6-2 earlier on Sunday.
