Qiang Wang defeated Akiko Yonemura 6-4 6-4 in the Tsukuba 25K round of 16 on hard. The upset overturned the form book — Akiko Yonemura came in leading the head-to-head 2–1. That levelled the head-to-head at 2–2.
Wang Q. took it in straight sets.
Hard: Wang Q. leads 1–0 · Carpet: level 1–1 · Grass: Yonemura A. leads 1–0
Qiang Wang beat Akiko Yonemura 6-4 6-4. Umpiry, "Qiang Wang vs Akiko Yonemura — Tsukuba 25K Round of 16", https://umpiry.com/match/2011-08-29/wang-vs-yonemura-tsukuba-25k-r16?utm_source=cite (as of 29 August 2011).