Chinami Ogi defeated Mari Inoue 6-2 6-1 in the Tsukuba 25K qualifying round of 32 on hard. The upset overturned the form book — Mari Inoue came in leading the head-to-head 1–0. Chinami Ogi claimed a first win over Mari Inoue in two meetings, levelling the head-to-head at 1–1.
Ogi C. took it in straight sets.
Chinami Ogi beat Mari Inoue 6-2 6-1. Umpiry, "Chinami Ogi vs Mari Inoue — Tsukuba 25K Qualifying Round of 32", https://umpiry.com/match/2011-08-29/inoue-vs-ogi-tsukuba-25k-q32?utm_source=cite (as of 29 August 2011).