ZHENGZHOU, China – It was straightforward work for Peng Shuai at the Biyuan Cup Zhengzhou Women’s Tennis Open as the top seed cruised past Shuko Aoyama, 6-1, 6-1.

In fact, all eight first-round matches played on Day 1 were concluded in straight sets.

That meant progress for second seed Wang Qiang, who beat Hiroko Kuwata 6-1, 6-1, and No.3 seed Duan Ying-Ying, who defeated qualifier Peangtarn Plipuech of Thailand by the same scoreline. Japan’s Nao Hibino, seeded fourth, beat compatriot Akiko Omae 6-1, 6-2.

The closest match of the day was between eighth seed Liu Fangzhou and Thailand’s Varatchaya Wongteanchai. The qualifier took the Chinese player to a first-set tiebreak, but eventually fell, 7-6(4), 6-2.

In the other clashes, Valentini Grammatikopoulou of Greece beat wildcard Xu Yi-Fan, 6-1, 6-3; Eri Hozumi of Japan beat qualifier Guo Hanyu by the same margin; and in the battle of the wildcards, Yang Zhaoxuan beat Tang Hao Chen, 6-1, 6-2.