Zi Yang defeated Wen Hsin Hsu 6-3 2-6 6-3 in the Tsukuba 25K round of 16 on hard. The upset overturned the form book — Wen Hsin Hsu came in leading the head-to-head 1–0, but Zi Yang had been the form player, winning 2 of their last 6 on hard. Zi Yang claimed a first win over Wen Hsin Hsu in two meetings, levelling the head-to-head at 1–1.
Yang Z. came through in three sets.
Zi Yang beat Wen Hsin Hsu 6-3 2-6 6-3. Umpiry, "Zi Yang vs Wen Hsin Hsu — Tsukuba 25K Round of 16", https://umpiry.com/match/2013-08-26/hsu-vs-yang-tsukuba-25k-r16?utm_source=cite (as of 26 August 2013).