Seiko Okamoto defeated Emily Hewson 6-3 6-3 in the Nagoya 25K qualifying round on hard. The result followed the form book — Seiko Okamoto came in leading the head-to-head 2–0. Seiko Okamoto extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-04-09 | Ho Chi Minh City 25K | QF | hard | Seiko Okamoto | 3-6 6-0 6-1 |
| 2006-07-17 | Kurume 25K | QF | carpet | Seiko Okamoto | 6-3 6-4 |