Naoko Sawamatsu defeated Corina Morariu 6-0 3-6 6-4 in the Jakarta round of 32 on hard. The upset overturned the form book — Corina Morariu came in leading the head-to-head 1–0, but Naoko Sawamatsu had been the form player, winning 2 of their last 4 on hard. Naoko Sawamatsu claimed a first win over Corina Morariu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-04-13 | Tokyo | QF | hard | Corina Morariu | 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.