Mari Inoue defeated Chinami Ogi 6-4 6-4 in the Tokyo 10K round of 32 on hard. The upset overturned the form book — Chinami Ogi came in leading the head-to-head 1–0. Mari Inoue claimed a first win over Chinami Ogi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-08-29 | Tsukuba 25K | Q32 | hard | Chinami Ogi | 6-2 6-1 |