Hanyu Guo defeated Jiahui Chen 6-4 6-2 in the Zhengzhou $25K qualifying round of 16 on hard.
Guo H. took it in straight sets.
Hanyu Guo beat Jiahui Chen 6-4 6-2. Umpiry, "Hanyu Guo vs Jiahui Chen — Zhengzhou $25K Qualifying Round of 16", https://umpiry.com/match/2015-07-20/chen-vs-guo-zhengzhou-25k-q16?utm_source=cite (as of 20 July 2015).