Chin Wei Chan defeated Erika Sema 6-4 7-5 in the Tsukuba 25K qualifying round on hard. The upset overturned the form book — Erika Sema came in leading the head-to-head 1–0, but Chin Wei Chan had been the form player, winning 6 of their last 9 on hard. Chin Wei Chan claimed a first win over Erika Sema in two meetings, levelling the head-to-head at 1–1.
Chan C. took it in straight sets.
Hard: Chan C. leads 1–0 · Carpet: Sema E. leads 1–0
Chin Wei Chan beat Erika Sema 6-4 7-5. Umpiry, "Chin Wei Chan vs Erika Sema — Tsukuba 25K Qualifying Round", https://umpiry.com/match/2011-08-29/chan-vs-sema-tsukuba-25k-qf?utm_source=cite (as of 29 August 2011).