MIAMI, March 22 (Xinhua) -- China's Wang Xinyu and Zheng Saisai secured a last 16 berth in the Miami Open women's doubles on Saturday with a 6-4, 7-6(6) victory over Canada's Gabriela Dabrowski and Erin Routliffe of New Zealand.
Wang and Zheng struck four aces and saved 10 of 18 break points to take the match in an hour and 45 minutes.
Second-seeded pair Dabrowski and Routliffe struggled with a series of unforced errors and looked particularly shaky on serve with eight double faults.
Wang and Zheng will meet American pair Danielle Collins and Desirae Krawczyk in the last 16.
Meanwhile, China's Jiang Xinyu and Chinese Taipei's Wu Fang-Hsien reached the last 16 with a 6-3, 7-5 win over American Asia Muhammad and Demi Schuurs of the Netherlands.
Jiang and Wu won 71 percent of points on their first serve and saved six of eight break points to take the match in an hour and 22 minutes.
Muhammad and Schuurs won just 60 percent of their first serve points and converted only two of eight break point opportunities.
The result means that Jiang and Wu will meet Ashlyn Krueger and Jessica Pegula in the next round.
Earlier, China's Zhang Shuai and Elise Mertens of Belgium recovered from a set down to beat Romanian Monica Niculescu and Poland's Katarzyna Piter.
Seventh-seeded pair Zhang and Mertens won 65 percent of points on their first serve and converted five of seven break points to prevail 4-6, 6-3, 10-7 in an hour and 34 minutes.
Niculescu and Piter committed three double faults and won less than 55 percent of their overall service points.
Zhang and Mertens will meet Timea Babos of Hungary and Brazil's Luisa Stefani in the round of 16 on Sunday. ■
