Seiko Okamoto defeated Antonia Matic 7-5 3-6 6-3 in the Nuriootpa 25K round of 32 on hard. Seiko Okamoto extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-08-09 | Vancouver | QF | hard | Seiko Okamoto | 4-6 6-2 6-4 |
| 2003-12-01 | Changsha 50K | R32 | hard | Antonia Matic | 0-6 6-2 6-3 |