Mari Inoue defeated Kei Sekine 6-2 6-2 in the Gifu 50K qualifying round of 32 on hard. The result followed the form book — Mari Inoue came in leading the head-to-head 2–0. Mari Inoue extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-09-13 | Kyoto 10K | R32 | carpet | Mari Inoue | 7-6(3) 6-3 |
| 2009-06-01 | Komoro 25K | R32 | clay | Mari Inoue | 6-3 7-6(2) |