Corina Morariu defeated Naoko Sawamatsu 7-5 6-3 in the Tokyo quarter-final on hard. The upset overturned the form book — Naoko Sawamatsu came in leading the head-to-head 1–0, defending last year's semi-final. Corina Morariu claimed a first win over Naoko Sawamatsu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-04-22 | Jakarta | R32 | hard | Naoko Sawamatsu | 6-0 3-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.