Qianqian Zhao defeated Ayumi Oka 7-5 0-6 7-6 in the Pingguo 25K qualifying round of 32 on hard.
Zhao Q. came through in three sets.
Qianqian Zhao beat Ayumi Oka 7-5 0-6 7-6(4). Umpiry, "Qianqian Zhao vs Ayumi Oka — Pingguo 25K Qualifying Round of 32", https://umpiry.com/match/2011-01-10/oka-vs-zhao-pingguo-25k-q32?utm_source=cite (as of 10 January 2011).