Junri Namigata defeated Seiko Okamoto 6-3 6-1 in the Kurume 50K round of 32 on grass. The result followed the form book — Junri Namigata came in leading the head-to-head 3–2. Junri Namigata extended the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-29 | Taoyuan 50K | R32 | hard | Junri Namigata | 6-3 6-3 |
| 2006-09-25 | Tokyo 50K | R16 | hard | Junri Namigata | 6-4 2-6 6-1 |
| 2005-05-30 | Gunma 25K | QF | carpet | Seiko Okamoto | 3-6 6-1 6-3 |
| 2005-05-23 | Nagano 25K | QF | carpet | Seiko Okamoto | 6-3 0-6 6-4 |
| 2005-04-25 | Hamanako 25K | R32 | carpet | Junri Namigata | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.